Practices Caring For The Underserved Are Less Likely To Adopt Medicare's Annual Wellness Visit

The Effect of Medicare Annual Wellness Visits on Breast Cancer Screening and Diagnosis

OBJECTIVE

The Medicare Annual Wellness Visit (AWV)-a prevention-focused annual check-up-has been available to beneficiaries with Part B coverage since 2011. The objective of this study was to estimate the effect of Medicare AWVs on breast cancer screening and diagnosis.

DATA SOURCES AND STUDY SETTING

The National Cancer Institute's Surveillance, Epidemiology, and End Results cancer registry data linked to Medicare claims (SEER-Medicare), HRSA's Area Health Resources Files, the FDA's Mammography Facilities database, and CMS "Mapping Medicare Disparities" utilization data from 2013 to 2015.

STUDY DESIGN

Using an instrumental variables approach, we estimated the effect of AWV utilization on breast cancer screening and diagnosis, using county Welcome to Medicare Visit (WMV) rates as the instrument.

DATA COLLECTION/EXTRACTION METHODS

66,088 person-year observations from 49,769 unique female beneficiaries.

PRINCIPAL FINDINGS

For every 1-percentage point increase in county WMV rate, the probability of AWV increased by 1.7 percentage points. Having an AWV was associated with a 22.4-percentage point increase in the probability of receiving a screening mammogram within 6 months ( P <0.001). There was no statistically significant increase in the probability of breast cancer diagnosis (overall or early stage) within 6 months of an AWV. Findings were robust to multiple model specifications.

CONCLUSIONS

Performing routine cancer screening is an evidence-based practice for diagnosing earlier-stage, more treatable cancers. The AWV effectively increases breast cancer screening and may lead to more timely screening. Continued investment in Annual Wellness Visits supports breast cancer screening completion by women who are most likely to benefit, thus reducing the risk of overscreening and overdiagnosis.

Determinants and effectiveness of annual wellness visits among Medicare beneficiaries in 2020

BACKGROUND

Annual wellness visits (AWVs) have the potential to improve general health and well-being, but little is known about the role of AWVs during the COVID-19 pandemic.

OBJECTIVE

We examined the determinants and effectiveness of having an AWV among Medicare beneficiaries in 2020.

METHODS

We employed a cross-sectional study design using data from the 2020 Medicare Current Beneficiary Survey. Our outcomes included AWV utilization, preventive care utilization, health status, and care satisfaction. To examine the determinants for having an AWV, we performed a linear regression model and explored the associations with other individual-level variables (demographic, socioeconomic, and health characteristics). To examine the effectiveness of having an AWV, we performed a linear regression model on each outcome measure while adjusting for individual-level variables.

RESULTS

We found that there were several determinants of having an AWV. The four most notable determinants were having a usual source of care, enrolling in Medicare Advantage, being non-Hispanic Black, and being Hispanic. We also found that having an AWV was associated with increases in preventive care use (COVID vaccine, flu shot, pneumonia shot, and blood pressure measurement), but was limited in improving health status and care satisfaction.

CONCLUSION

Our finding raises critical concerns about inequitable access to health care services for disease prevention and health promotion during the pandemic. Furthermore, the effectiveness of AWVs was mostly in increased preventive care use, suggesting a limited role in meeting the wellness needs of a diverse population of older adults.

Use of preventive service and potentially preventable hospitalization among American adults with disability: Longitudinal analysis of Traditional Medicare and commercial insurance

Objective

Examine the association between traditional Medicare (TM) vs. commercial insurance and the use of preventive care and potentially preventable hospitalization (PPH) among adults (18+) with disability [cerebral palsy/spina bifida (CP/SB); multiple sclerosis (MS); traumatic spinal cord injury (TSCI)] in the United States.

Methods

Using 2008-2016 Medicare and commercial claims data, we compared adults with the same disability enrolled in TM vs. commercial insurance [Medicare: n = 21,599 (CP/SB); n = 7,605 (MS); n = 4,802 (TSCI); commercial: n = 11,306 (CP/SB); n = 6,254 (MS); n = 5,265 (TSCI)]. We applied generalized estimating equations to address repeated measures, comparing cases with controls. All models were adjusted for age, sex, race/ethnicity, and comorbid conditions.

Results

Compared with commercial insurance, enrolling in TM reduced the odds of using preventive services. For example, adjusted odds ratios (OR) of annual wellness visits in TM vs. commercial insurance were 0.31 (95% confidence interval (CI): 0.28-0.34), 0.32 (95% CI: 0.28-0.37), and 0.19 (95% CI: 0.17-0.22) among adults with CP/SB, TSCI, and MS, respectively. Furthermore, PPH risks were higher in TM vs. commercial insurance. ORs of PPH in TM vs. commercial insurance were 1.50 (95% CI: 1.18-1.89), 1.83 (95% CI: 1.40-2.41), and 2.32 (95% CI: 1.66-3.22) among adults with CP/SB, TSCI, and MS, respectively. Moreover, dual-eligible adults had higher odds of PPH compared with non-dual-eligible adults [CP/SB: OR = 1.47 (95% CI: 1.25-1.72); TSCI: OR = 1.61 (95% CI: 1.35-1.92), and MS: OR = 1.80 (95% CI: 1.55-2.10)].

Conclusions

TM, relative to commercial insurance, was associated with lower receipt of preventive care and higher PPH risk among adults with disability.

Participation in a Medicare advanced primary care model and the delivery of high-value services

OBJECTIVE

To evaluate whether primary care providers' participation in the Comprehensive Primary Care Plus Initiative (CPC+) was associated with changes in their delivery of high-value services.

DATA SOURCES

Medicare Physician & Other Practitioners public use files from 2013 to 2019, 2017 to 2019 Medicare Part B claims for a 5% random sample of Medicare Fee-for-Service (FFS) beneficiaries, the Area Health Resources File, the National Plan & Provider Enumeration System files, and public use datasets from the Centers for Medicare & Medicaid Services Physician Compare.

STUDY DESIGN

We used a difference-in-difference approach with a propensity score-matched comparison group to estimate the association of CPC+ participation with the delivery of annual wellness visits (AWVs), advance care planning (ACP), flu shots, counseling to prevent tobacco use, and depression screening. These services are prominent examples of high-value services, providing benefits to patients at a reasonable cost. We examined both the likelihood of delivering these services within a year and the count of services delivered per 1000 Medicare FFS beneficiaries per year.

DATA COLLECTION/EXTRACTION METHODS

Secondary data are linked at the provider level.

PRINCIPAL FINDINGS

We find that CPC+ participation was associated with increases in the likelihood of delivering AWVs (13.03 percentage points by CPC+'s third year, p < 0.001) and the number of AWVs per 1000 Medicare FFS beneficiaries (44 more AWVs by CPC+'s third year, p < 0.001). We also find that CPC+ participation was associated with more flu shots per 1000 beneficiaries (52 more shots by CPC+'s third year, p < 0.001) but not with the likelihood of delivering flu shots. We did not find consistent evidence for the association between CPC+ participation and ACP services, counseling to prevent tobacco use, or depression screening.

CONCLUSIONS

CPC+ participation was associated with increases in the delivery of AWVs and flu shots, but not other high-value services.

Proportion Of Preventive Primary Care Visits Nearly Doubled, Especially Among Medicare Beneficiaries, 2001-19

There is debate about the value of preventive visits in primary care, and multiple policy trends during the past fifteen years may have influenced the likelihood of US adults undergoing preventive primary care visits. Using nationally representative, serial cross-sectional data on adult visits to primary care physicians from the 2001-19 National Ambulatory Medical Care Survey, we characterized temporal trends in the proportion of primary care visits with a preventive focus and the differential characteristics of these visits. Based on a sample of 139,783 unweighted (5,902,144,258 weighted) US primary care visits, we found that the proportion of primary care visits with a preventive focus increased between 2001 and 2019 (12.8 percent of visits in 2001-02 versus 24.6 percent in 2018-19; [Formula: see text]), with the greatest rate of increase seen for people with Medicare. Primary care visits with a preventive focus involved more time spent with the physician and addressed fewer reasons for the visit compared with problem-based visits. At least one of the following was significantly more likely to occur during a preventive visit than a problem-based visit: counseling provision, ordering of preventive labs, or ordering of a preventive image or procedure. Our findings demonstrate a relative increase in preventive versus problem-based visits in primary care and suggest the importance of enhanced insurance coverage in influencing preventive care delivery trends.

Racial differences in low value care among older adult Medicare patients in US health systems: retrospective cohort study

OBJECTIVE

To characterize racial differences in receipt of low value care (services that provide little to no benefit yet have potential for harm) among older Medicare beneficiaries overall and within health systems in the United States.

DESIGN

Retrospective cohort study SETTING: 100% Medicare fee-for-service administrative data (2016-18).

PARTICIPANTS

Black and White Medicare patients aged 65 or older as of 2016 and attributed to 595 health systems in the United States.

MAIN OUTCOME MEASURES

Receipt of 40 low value services among Black and White patients, with and without adjustment for patient age, sex, and previous healthcare use. Additional models included health system fixed effects to assess racial differences within health systems and separately, racial composition of the health system's population to assess the relative contributions of individual patient race and health system racial composition to low value care receipt.

RESULTS

The cohort included 9 833 304 patients (6.8% Black; 57.9% female). Of 40 low value services examined, Black patients had higher adjusted receipt of nine services and lower receipt of 20 services than White patients. Specifically, Black patients were more likely to receive low value acute diagnostic tests, including imaging for uncomplicated headache (6.9% v 3.2%) and head computed tomography scans for dizziness (3.1% v 1.9%). White patients had higher rates of low value screening tests and treatments, including preoperative laboratory tests (10.3% v 6.5%), prostate specific antigen tests (31.0% v 25.7%), and antibiotics for upper respiratory infections (36.6% v 32.7%; all P<0.001). Secondary analyses showed that these differences persisted within given health systems and were not explained by Black and White patients receiving care from different systems.

CONCLUSIONS

Black patients were more likely to receive low value acute diagnostic tests and White patients were more likely to receive low value screening tests and treatments. Differences were generally small and were largely due to differential care within health systems. These patterns suggest potential individual, interpersonal, and structural factors that researchers, policy makers, and health system leaders might investigate and address to improve care quality and equity.

The national public health response to Alzheimer's disease and related dementias: Origins, evolution, and recommendations to improve early detection

Longstanding gaps in the detection of Alzheimer's disease and related dementias (ADRD) and biopsychosocial care call for public health action to improve population health. We aim to broaden the understanding of the iterative role state plans have played over the last 20 years in prioritizing improvements in the detection of ADRD, primary care capacity, and equity for disproportionately affected populations. Informed by national ADRD priorities, state plans convene stakeholders to identify local needs, gaps, and barriers and set the stage for development of a national public health infrastructure that can align clinical practice reform with population health goals. We propose policy and practice actions that would accelerate the collaboration between public health, community organizations, and health systems to improve ADRD detection-the point of entry into care pathways that could ultimately improve outcomes on a national scale. HIGHLIGHTS: We systematically reviewed the evolution of state/territory plans for Alzheimer's disease and related dementias (ADRD). Plan goals improved over time but lacked implementation capacity. Landmark federal legislation (2018) enabled funding for action and accountability. The Centers for Disease Control and Prevention (CDC) funds three Public Health Centers of Excellence and many local initiatives. Four new policy steps would promote sustainable ADRD population health improvement.

Integrating 4Ms Assessment through Medicare Annual Wellness Visits: Comparison of Quality Improvement Strategies in Primary Care Clinics

The Medicare Annual Wellness Visit (AWV), which includes comprehensive preventative assessments and screenings, is associated with improved preventative services, including vaccination and cancer screenings. However, the AWV alone does not promote whole-person care. Integrating the AWV within an Age-Friendly Health System (AFHS) contextualizes AWV services within a comprehensive geriatric care framework that integrates the "4Ms" (mentation, medication, mobility, and what matters). This study describes and evaluates quality improvement initiatives to improve the completion of AWV within two different AFHS-recognized health systems (an academic university clinic and a Federally Qualified Health Center). The results from this evaluation present opportunities that other health systems can consider for leveraging electronic health records (EHRs) and enabling services to complete AWVs within a 4Ms framework. The implementation results also suggest an adaptation of the 4Ms assessment schedule for patients with complex chronic conditions who may suffer from multiple comorbidities and cognitive impairment.

Collaborating toward equity in Pennsylvania: The Age-Friendly Care, PA project

OBJECTIVE

To collaboratively implement the age-friendly health systems framework, known as the 4Ms: What Matters, Medication, Mentation, and Mobility, at The Primary Health Network (PHN), a federally qualified health center.

DATA SOURCES

Data were collected from PHN electronic medical records (EMRs) for individuals over age 65 from December 30, 2019 to December 24, 2021 and from Project ECHO© attendance and evaluation surveys.

STUDY DESIGN

The telementoring educational program, Project ECHO©, was used to engage PHN health care professionals working in rural areas of Pennsylvania to incorporate the 4Ms into their practice starting with the annual wellness visit (AWV). Project ECHO© was launched at three primary care sites. After 18 months, it was then disseminated to an additional 18 sites creating pilot and comparison groups. Outcomes included codesigned patient process metrics using EMR data and project ECHO© participant data.

DATA COLLECTION METHODS

EMR data were generated by system reports created by PHN's quality assurance program manager. Project ECHO© data were collected and managed using REDCap electronic data capture tools. Outcomes were aggregated, analyzed for trends over time, and compared between groups.

PRINCIPAL FINDINGS

All nine process outcomes increased from baseline to follow-up at the three initial sites, ranging from 4% to 43% g. At year two, the three initial sites had higher rates on AWVs (pilot 24%, comparison 12%; p < 0.0001), Advance Care Planning (New on file, pilot 8%, comparison 2%; Discussed with patient, pilot 18%, comparison 13%; Patient declined, pilot 0%, comparison 0%; p = 0.0001), Dementia Screening (pilot 24%, comparison 12%; p < 0.0001), Fall Risk Management (pilot 43%, comparison 10%; p < 0.0001), and Mobility Goal (pilot 19%, comparison 9%; p < 0.0001); and lower rates on High-Risk Medication Elimination (pilot 54%, comparison, 63%, p < 0.02).

CONCLUSIONS

Access to high-quality geriatric care for rural older adults can be improved by increasing health care professionals' knowledge of the 4Ms, beginning with its incorporation into the AWV.

Practice Billing for Medicare Advance Care Planning Across the USA

BACKGROUND

Medicare introduced billing codes in 2016 to encourage clinicians to engage in advance care planning (ACP) and promote goal-concordantend-of-life care, but uptake has been modest. While prior research examined individual-level factors in ACP billing, organization-level factors associated with physician practices billing for ACP remain unknown.

OBJECTIVE

Examine the role of practices in ACP billing.

DESIGN

Retrospective cohort study analyzing 2016-2018 national Medicare data.

PARTICIPANTS

A total of 53,926 practices with at least 10 attributed Medicare beneficiaries.

MAIN MEASURES

Outcomes were practice-level ACP billing (any use by the practice) and ACP use rate by practice-attributed beneficiaries. Practice characteristics were number of beneficiaries attributed to the practice; percentage of beneficiaries by race, Medicare-Medicaid dual enrollment, sex, and age; practice size; and specialty mix.

KEY RESULTS

Fifteen percent of practices billed for ACP. In adjusted models, we found higher odds of ACP billing and higher ACP use rates among practices with more primary care physicians (billing AOR: 10.01, 95%CI: 8.81-11.38 for practices with 75-100% (vs 0) primary care physicians), and those serving more Medicare beneficiaries (billing AOR: 4.55, 95%CI 4.08-5.08 for practices with highest (vs lowest) quintile of beneficiaries), and larger shares of female beneficiaries (billing AOR: 3.06, 95% CI 2.01-4.67 for 75-100% (vs <25%) female ).

CONCLUSIONS

Several years after Medicare introduced ACP reimbursements for physicians, relatively few practices bill for ACP. ACP billing was more likely in large practices with a greater percentage of primary care physicians. To increase ACP billing uptake, policymakers and health system leaders might target interventions to larger practices where a small number of physicians already bill for ACP and to specialty practices that serve as the primary source of care for seriously ill patients.

Perceptions of health and illness among older Hispanic adults

BACKGROUND

Understanding perceptions of health and illness among older Hispanic adults is vital for nurses when designing effective health promotion programs.

PURPOSE

The purpose of this study was to explore the perceptions of health and illness and how health was maintained during times of illness.

METHOD

This inductive qualitative descriptive study used a single focus group with interviews over three sessions. All eight members of the focus group were Spanish-speaking, older adults living in the community. Immersion/crystallization and editing analytic styles were used to analyze the data.

RESULTS

Participants were parishioners at a local church and knew each other from participating in community events. Perceptions of health mainly focused on both the absence of illness and physical limitations. Maintaining health included a healthy lifestyle and being physically active; however, food was central to maintaining health. Perceptions of illness were described as "feelings of sickness" such as sadness and worry. Dealing with illness was equated with physical limitations, with strategies suggested, including going to the doctor, preparing natural and folk remedies, spirituality, and support from family and friends.

CONCLUSION

Nurses have an important role in assessing the health management strategies of older Hispanic adults and need to incorporate the older adults' understanding of health and illness into their plan of care.

Using Medicare Annual Wellness Visits and telehealth to enhance ambulatory geriatrics education among medical students

The Medicare Annual Wellness visit (AWV) was mandated as a fully covered benefit for older adults to enhance preventive care and improve healthcare outcomes. Although the benefit of conducting AWV is proven, its adoption in primary care is far from universal. The COVID-19 pandemic affected medical education and clinical care in unprecedented ways. Telehealth became a prominent way of delivering healthcare. Older adults, being significantly affected by the pandemic-related mortality and morbidity, were less likely to engage in preventive care with their healthcare providers. Amidst this considerable shift, we conceptualized a clinical experience for third-year medical students during their Ambulatory Care - Geriatrics clerkship that involved a telehealth interaction with an older adult to review AWV components, followed by an in-person office visit with the geriatrician preceptor. Post-session survey data highlighted the beneficial effect on student learning about older adult health maintenance, immunizations and geriatric syndrome assessment. It also facilitated self-directed learning and increased student-patient rapport. Preceptors appreciated the additional elements of care identified by the telehealth call that would otherwise not have been addressed in a time-limited office visit. This hybrid clinical experience reduced crowding in ambulatory clinical space during the COVID-19 pandemic, yet enhanced learning for students in geriatrics preventive care.

Medicare's Annual Wellness Visit and diagnoses of dementias and cognitive impairment

Introduction

Early detection of Alzheimer's disease and related dementias allows clinicians and patients to prepare for future needs and identify treatment options. Medicare's Annual Wellness Visit (AWV) requires detection of cognitive impairment and may increase dementia diagnosis. We estimated the relationship between AWV receipt and incident dementia.

Methods

Using a retrospective cohort of Medicare Fee-For-Service (FFS) beneficiaries enrolled for at least 3 years from 2009 to 2016 and two-stage least squares, we quantified the relationship between AWV and incident diagnosis of cognitive impairment/dementia, and by race/ethnicity. The county-level change in percent of beneficiaries receiving AWVs was used as an instrumental variable to account for unobserved factors associated with individuals' AWV receipt and diagnosis. Sample included 3,333,617 beneficiaries ages 67 years and older, without dementia at the beginning of the study.

Results

Beneficiaries included 2,713,573 White, 251,958 Black, 196,845 Hispanic, 95,719 Asian, 11,727 American Indian/Alaska Native, and 63,795 of other race/ethnicity. Using ordinary least squares, dementia incidence was -0.79 percentage points (95% CI -0.81 to -0.76) lower for persons receiving an AWV compared to no AWV. Using instrumental variables reversed the direction of the effect: AWV receipt increased dementia diagnoses by 0.47 percentage points (95% CI 0.14 to 0.80), 15% over baseline. AWVs increased diagnoses 2.0 percentage points (95% CI 0.05 to 3.94) among Blacks, 0.40 percentage points (95% CI 0.05 to 0.75) among Whites, but est were imprecise for Hispanics and Asians.

Discussion

Increasing AWV take-up and supporting physicians' performance of cognitive assessment may further improve dementia detection in the population and among groups at higher risk of undiagnosed dementia.

Medicare's annual wellness visit: 10 years of opportunities gained and lost

Medicare annual wellness visits (AWV) were initiated 10 years ago. Though AWVs emphasize on disease prevention and health promotion for older adults was a huge step forward, the current "one size fits all" approach does not adequately meet the wellness needs of a diverse population of older adults. Current AWVs do not sufficiently take into consideration the medical, psychological, functional, racial, cultural and socio-economic diversity of older adults. Updated AWVs should be tailored to meet the needs and priorities of older adults receiving them. Several geriatrics approaches to care, including geriatrics Glidepaths and the 4Ms of an Age-Friendly Health System, could help develop and guide a more patient-specific geriatrics focused approach to AWVs. Medicare's IPPE is an ideal time to advise new Medicare beneficiaries regarding what they should and should not do to maximize their ability to be healthy and functionally independent into their 80s, 90s, and 100s.

Annual wellness visits are associated with increased use of preventive services in patients with diabetes living in the Diabetes Belt

Objective:

To examine whether Annual Wellness Visits (AWVs) were associated with increased use of preventive services in Medicare patients with diabetes living in the Diabetes Belt.

Methods:

We used a case-control design where outcomes were utilization of preventive services recommended for patients with diabetes (foot exam, eye exam, A1c test, and microalbuminuria test) and the exposure was AWVs using data for Medicare patients with diabetes in 2014 − 2015 residing in the Diabetes Belt (N = 412,009).

Results:

Only 13.4% of patients in 2014 and 17.4% in 2015 used AWVs. Eye exams (61% vs 53%), foot exams (93% vs 79%), A1c tests (81% vs 71%), and microalbuminuria tests (45% vs 28%) were more common among patients who had an AWV in the preceding year compared with those who did not. These differences remained significant after adjusting for patient demographics, comorbidities, county level medical resources, and geographic factors.

Conclusions:

AWVs were significantly associated with increased preventive care use among patients with diabetes living in the Diabetes Belt. Low AWV utilization by patients with diabetes in and around the Diabetes Belt is concerning.

Physician versus Practice-Level Primary Care Continuity and Association with Outcomes in Medicare Beneficiaries

OBJECTIVE

To compare physician versus practice-level primary care continuity and their association with expenditure and acute care utilization among Medicare beneficiaries and evaluate if continuity of outpatient primary care at either/both physician or/and practice level could be useful quality measures.

DATA SOURCE

Medicare Fee-For-Service claims data for community dwelling beneficiaries without End-Stage Renal Disease who were attributed to a national random sample of primary care practices billing Medicare (2011-2017).

STUDY DESIGN

Retrospective secondary data analysis at per Medicare beneficiary per year level. We used multivariable linear regression with practice-level fixed effects to estimate continuity of care score at physician vs. practice level and their associations with outcomes.

DATA COLLECTION/EXTRACTION METHOD

We calculated clinician and practice level Bice-Boxerman continuity of care index scores, ranging from 0 to 1, using primary care outpatient claims. Medicare expenditures, hospital admissions, emergency department visits, and readmissions were obtained from the Medicare Beneficiary Summary File: Cost and Utilization Segment. Ambulatory care sensitive conditions (ACSC) were defined using diagnosis codes on inpatient claims.

PRINCIPAL FINDINGS

We studied 2,359,400 beneficiaries who sought care from 13,926 physicians. Every 0.1 increase in physician continuity score was associated with a $151 reduction in expenditures per beneficiary per year (P<0.01), and every 0.1 increase in practice continuity score was associated with $282 decrease (P<0.01) per beneficiary per year. Both physician- and practice-level continuity were associated with lower Medicare expenditures among small, medium, and large practices. Both physician- and practice-level continuity were associated with lower probabilities of hospitalization, emergency department visit, admissions for ACSC, and readmission.

CONCLUSIONS

Primary care continuity of care could serve as a potent value-based care quality metric. Physician-level continuity is a unique value center that cannot be supplanted by practice level continuity.

Impact of establishing a Geriatrics Workforce Enhancement Program clinic on preventive health and Medicare Annual Wellness Visits

We established a Geriatrics Workforce Enhancement Program (GWEP) clinic to enhance resident training on comprehensive preventive care and chronic disease management, and to increase the number of older patients who received Medicare Annual Wellness Visit (AWV) preventive services. A total of 1,104 patients were tracked at baseline and during the intervention period. Patients were grouped into two categories: Adult (aged 55-64) and Senior (aged 65+). Clinical quality measures were monitored by electronic health record and tracked through monthly reports at baseline (May 2018) and during the intervention period (July 2018-June 2019). In the Senior group, the proportion of patients receiving the Medicare AWV increased after GWEP began (p <.001). Additionally, the Senior group showed significant improvements in the frequency of body mass index assessments (p = .04), colorectal cancer screenings (p < .001), advance directive documentation (p < .001), cognitive screenings (p < .001), and pneumococcal vaccinations (p < .001). In the Adult group, a trending increase was seen in influenza vaccinations (p = .06). Curricular innovations including the establishment of a GWEP clinic in our residency outpatient center, development of new educational materials, and use of a nurse coordinator resulted in significant improvements in the percentage of older adults who received the Medicare AWV benefit and preventive health performance metrics.

Acceptability and Preliminary Effectiveness of a Remote Dementia Educational Training Among Primary Care Providers and Health Navigators

BACKGROUND

Optimal care can improve lives of families with dementia but remains under-implemented. Most healthcare professional training is in person, time-intensive, and does not focus on key aspects such as early detection, and cultural competency.

OBJECTIVE

We explored the acceptability and preliminary effectiveness of a training, The Dementia Update Course, which addressed these issues. We hypothesized that the training would lead to increased levels of perceived dementia care competency among key healthcare workers, namely primary care providers (PCPs) and health navigators (HNs).

METHODS

We conducted pre-post training assessments among 22 PCPs and 32 HNs. The 6.5-h training was remote, and included didactic lectures, case discussion techniques, and materials on dementia detection and care. Outcomes included two 5-point Likert scales on acceptability, eleven on perceived dementia care competency, and the three subscales of the General Practitioners Confidence and Attitude Scale for Dementia. We used paired samples t-tests to assess the mean differences in all preliminary effectiveness outcomes.

RESULTS

The training included 28.6% of PCPs and 15.6% of HNs that self-identified as non-White or Latino and 45.5% of PCPs and 21.9% of HNs who served in rural areas. PCPs (84.2%) and HNs (91.7%) reported a high likelihood to recommend the training and high satisfaction. Most preliminary effectiveness outcomes analyzed among PCPs (11/14) and all among HNs (8/8) experienced an improvement from pre- to post-training (p < 0.05).

CONCLUSION

A relatively brief, remote, and inclusive dementia training was associated with high levels of acceptability and improvements in perceived dementia care competency among PCPs and HNs.

A New Interprofessional Community-Service Learning Program, HATS (Health Ambassador Teams for Seniors) to Improve Older Adults Attitudes about Telehealth and Functionality

Senior population health often is underrepresented in curricula for medical and allied health students. Furthermore, entrenched and dense curricular schedules preclude interprofessional teams from clinical experiences related to senior population health. Community service learning potentially offers the opportunity to engage interprofessional students with a panel of older adults to assess health promotion metrics over time. To test this educational concept, we created Health Ambassador Teams for Seniors, also known as HATS. Utilizing a telehealth platform, interprofessional student teams were tasked with older adult wellness promotion. The annual Medicare wellness exam served as a template for patient encounters which was enhanced with key elements of geriatric assessment such as gait and balance, cognition, and functional evaluations. The objective was to have dyads of interprofessional students conduct telehealth visits and gather healthcare data to be used for serial patient encounters and track functional trajectories over time. As a proof of concept, pilot telehealth encounters with medical, physical therapy, nursing and occupational therapy students revealed that data on older adult functional performances such as gait speed, Timed Up and Go test (TUG), and Mini-Cog test could be acquired through telehealth. Equally importantly, trainees received diverse feedback from faculty, peers and volunteer patients. A Research Electronic Data Capture (REDCap) data repository allows trainees to track patient trends relative to their health promotion recommendations as well as handoff their patient panel to the next set of trainees. The HATS program promises to strengthen the Geriatric Workforce, especially with senior population health.

Use of Medicare's New Reimbursement Codes for Cognitive Assessment and Care Planning, 2017-2018

This cross-sectional study assesses the use of Medicare's cognitive assessment and care planning codes in the first 2 years of their introduction.

Advance Care Planning For Medicare Beneficiaries Increased Substantially, But Prevalence Remained Low

In 2016 fee-for-service Medicare began reimbursing physicians for advance care planning conversations with enrollees during outpatient visits and waived the copayment for advance care planning when it was part of the Medicare annual wellness visit. Advance care planning is intended to help providers treat patients in ways consistent with their wishes and may also reduce unnecessary health care use and spending. Examining fee-for-service Medicare claims, we found a substantial increase in outpatient advance care planning claims between 2016 and 2019, although prevalence remained below 7.5 percent for all patient subgroups analyzed. Roughly half of beneficiaries with advance care planning claims received the service at an annual wellness visit; the remainder received it at a different outpatient visit. Among those with claims, Black, Hispanic, and Medicaid dual-eligible patients and patients with comorbidities were less likely to have a claim at an annual wellness visit, largely because they have fewer such visits overall. Medicare's annual wellness visits offer the potential to expand enrollees' access to advance care planning at no expense to them, in advance of serious illness, and to populations less likely to undertake advance care planning generally.

Effects of a Specialized Primary Care Facility on Preventive Service Use Among Autistic Adults: a Retrospective Claims Study

BACKGROUND

While in some studies, the patient-centered medical home has been linked with increased receipt of preventive services among other populations, there is a paucity of literature testing the effectiveness of medical homes in serving the healthcare needs of autistic adults.

OBJECTIVE

To compare the receipt of preventive services by patients at a patient-centered medical home specifically designed for autistic adults (called the Center for Autism Services and Transition "CAST") to US national samples of autistic adults with private insurance or Medicare.

DESIGN

Retrospective study of medical billing data.

SAMPLE

The study sample included CAST patients (N = 490) who were propensity score matched to Medicare-enrolled autistic adults (N = 980) and privately insured autistic adults (N = 980) using demographic characteristics. The median age of subjects was 21 years old, 79% were male, and the median duration of observation was 2.2 years.

MAIN MEASURES

The primary outcome measure was the receipt of any preventive service, as defined by the Medicare Learning Network and AAPC (formerly the American Academy of Professional Coders). Secondary outcome measures included receipt of specific preventive service types (i.e., general health and wellness services, screenings, counseling and therapies, vaccinations, and sexual/reproductive health services).

KEY RESULTS

CAST patients had significantly greater odds of receiving any preventive service than Medicare-enrolled (OR = 10.3; 95% CI = 7.6-13.9) and privately insured (OR = 3.1; 95% CI = 2.3-4.2) autistic adults. CAST patients were also significantly more likely to receive screenings and vaccinations than either Medicare beneficiaries (screenings OR = 20.3; 95% CI = 14.7-28.0; vaccinations OR = 5.5; 95% CI = 4.3-7.0) or privately insured beneficiaries (screenings OR = 2.0; 95% CI = 1.6-2.5; vaccinations OR = 3.3; 95% CI = 2.6-4.1).

CONCLUSIONS

Autistic adults receiving care through CAST were significantly more likely to recieve preventive care services than national samples of autistic adults. Future comparative effectiveness trials are needed to rigorously assess the impact of primary care-based initiatives to improve care for autistic adults.

Medicare's Care Management Codes Might Not Support Primary Care As Expected

To enhance compensation for primary care activities that occur outside of face-to-face visits, the Centers for Medicare and Medicaid Services recently introduced new billing codes for transitional care management (TCM) and chronic care management (CCM) services. Overall, rates of adoption of these codes have been low. To understand the patterns of adoption, we compared characteristics of the practices that billed for these services to those of the practices that did not and determined the extent to which a practice other than the beneficiary's usual primary care practice billed for the services. Larger practices and those using other novel billing codes were more likely to adopt TCM or CCM. Over a fifth of all TCM claims and nearly a quarter of all CCM claims were billed by a practice that was not the beneficiary's assigned primary care practice. Our results raise concerns about whether these codes are supporting primary care as originally expected.

Understanding the most commonly billed diagnoses in primary care: General medical exam

ABSTRACT

This is the ninth article in a 12-part series on the most commonly billed diagnoses in primary care. The purpose of the adult general medical exam is health promotion, disease prevention, early disease detection, and management of chronic disease processes.

Overcoming the COVID-19 Pandemic for Dementia Research: Engaging Rural, Older, Racially and Ethnically Diverse Church Attendees in Remote Recruitment, Intervention and Assessment

BACKGROUND

Access to cognitive screening in rural underserved communities is limited and was further diminished during the COVID-19 pandemic. We examined whether a telephone-based cognitive screening intervention would be effective in increasing ADRD knowledge, detecting the need for further cognitive evaluation, and making and tracking the results of referrals.

METHOD

Using a dependent t-test design, older, largely African American and Afro-Caribbean participants completed a brief educational intervention, pre/post AD knowledge measure, and cognitive screening.

RESULTS

Sixty of 85 eligible individuals consented. Seventy-percent of the sample self-reported as African American, Haitian Creole, or Hispanic, and 75% were female, with an average age of 70. AD knowledge pre-post scores improved significantly (t (49) = -3.4, p < .001). Of the 11 referred after positive cognitive screening, 72% completed follow-up with their provider. Five were newly diagnosed with dementia. Three reported no change in diagnosis or treatment. Ninety-percent consented to enrolling in a registry for future research.

CONCLUSION

Remote engagement is feasible for recruiting, educating, and conducting cognitive screening with rural older adults during a pandemic.

Interprofessional value-based health care: Nurse practitioner-dentist model

OBJECTIVES

The United States health system is challenged to improve patient and population health, enhance patients' experience of care, and reduce health care costs. Value-based health care (VBHC) models are proposed to address these issues. Medical health systems are making strides toward VBHC, whereas dental care systems lag behind. The aims of this paper are to a) present study findings of an interprofessional practice model integrating oral health and primary care in a dental practice setting, and b) discuss practice and research implications for advancing VBHC approaches in oral health.

METHODS

A nonexperimental research method was employed to evaluate the Nurse Practitioner-Dentist Model for Primary Care (NPD Model) at the Harvard Dental Center. Pretest/post-test design was used to assess clinical patient outcomes for a convenience cohort of Medicare beneficiaries (n = 31) with a reported diagnosis of hypertension and/or type 2 diabetes. Clinical outcome measures included: blood pressure, weight, body mass index (BMI), and Hemoglobin A1c.

RESULTS

Positive and significant improvements in biometrics (blood pressure, body weight, BMI, HbA1c) were found.

CONCLUSIONS

The NPD Model is an early prototype for interprofessional VBHC in oral health and holds promise for improving patient and population health outcomes. Integration of interprofessional VBHC in oral health is an imperative for achieving the Triple Aim to improve the overall health of our nation.

Association Of Medicare's Annual Wellness Visit With Cancer Screening, Referrals, Utilization, And Spending

Medicare's annual wellness visit was introduced in 2011 to promote evidence-based preventive care and identify risk factors and undiagnosed conditions in aging adults. Use of the visit has risen steadily since then, yet its benefits remain unclear. Using national Medicare data for 2008-15, we examined claims from fee-for-service Medicare beneficiaries attributed to practices that did or did not adopt the visit. We performed difference-in-differences analysis to compare differential changes in appropriate and low-value cancer screening, functional and neuropsychiatric care, emergency department visits, hospitalizations, and total spending. Examining 17.8 million beneficiary-years, we found modest differential improvements in rates of evidence-based screening and declines in emergency department visits. However, when we accounted for trends that predated the introduction of the visit, none of these benefits persisted. In sum, we found no substantive association between annual wellness visits and improvements in care.

Savings or Selection? Initial Spending Reductions in the Medicare Shared Savings Program and Considerations for Reform

Policy Points Concerns have been raised about risk selection in the Medicare Shared Savings Program (MSSP). Specifically, turnover in accountable care organization (ACO) physicians and patient panels has led to concerns that ACOs may be earning shared-savings bonuses by selecting lower-risk patients or providers with lower-risk panels. We find no evidence that changes in ACO patient populations explain savings estimates from previous evaluations through 2015. We also find no evidence that ACOs systematically manipulated provider composition or billing to earn bonuses. The modest savings and lack of risk selection in the original MSSP design suggest opportunities to build on early progress. Recent program changes provide ACOs with more opportunity to select providers with lower-risk patients. Understanding the effect of these changes will be important for guiding future payment policy.

CONTEXT

The Medicare Shared Savings Program (MSSP) establishes incentives for participating accountable care organizations (ACOs) to lower spending for their attributed fee-for-service Medicare patients. Turnover in ACO physicians and patient panels has raised concerns that ACOs may be earning shared-savings bonuses by selecting lower-risk patients or providers with lower-risk panels.

METHODS

We conducted three sets of analyses of Medicare claims data. First, we estimated overall MSSP savings through 2015 using a difference-in-differences approach and methods that eliminated selection bias from ACO program exit or changes in the practices or physicians included in ACO contracts. We then checked for residual risk selection at the patient level. Second, we reestimated savings with methods that address undetected risk selection but could introduce bias from other sources. These included patient fixed effects, baseline or prospective assignment, and area-level MSSP exposure to hold patient populations constant. Third, we tested for changes in provider composition or provider billing that may have contributed to bonuses, even if they were eliminated as sources of bias in the evaluation analyses.

FINDINGS

MSSP participation was associated with modest and increasing annual gross savings in the 2012-2013 entry cohorts of ACOs that reached $139 to $302 per patient by 2015. Savings in the 2014 entry cohort were small and not statistically significant. Robustness checks revealed no evidence of residual risk selection. Alternative methods to address risk selection produced results that were substantively consistent with our primary analysis but varied somewhat and were more sensitive to adjustment for patient characteristics, suggesting the introduction of bias from within-patient changes in time-varying characteristics. We found no evidence of ACO manipulation of provider composition or billing to inflate savings. Finally, larger savings for physician group ACOs were robust to consideration of differential changes in organizational structure among non-ACO providers (eg, from consolidation).

CONCLUSIONS

Participation in the original MSSP program was associated with modest savings and not with favorable risk selection. These findings suggest an opportunity to build on early progress. Understanding the effect of new opportunities and incentives for risk selection in the revamped MSSP will be important for guiding future program reforms.

Mind, Mood, Mobility: Supporting Independence Among Rural Older Adults at Risk for Functional Decline

Rural communities need access to effective interventions that can prevent functional decline among a growing population of older adults. We describe the conceptual framework and rationale for a multicomponent intervention ("Mind, Mood, Mobility") delivered by Area Agency on Aging staff for rural older adults at risk for functional decline due to early impairments in cognition, mood, or mobility. Our proposed model utilizes primary care to identify at-risk older adults, combines evidence-based interventions that address multiple risk factors simultaneously, and leverages a community-based aging services workforce for intervention delivery.

Frailty Screening Using the Electronic Health Record Within a Medicare Accountable Care Organization

BACKGROUND

The accumulation of deficits model for frailty has been used to develop an electronic health record (EHR) frailty index (eFI) that has been incorporated into British guidelines for frailty management. However, there have been limited applications of EHR-based approaches in the United States.

METHODS

We constructed an adapted eFI for patients in our Medicare Accountable Care Organization (ACO, N = 12,798) using encounter, diagnosis code, laboratory, medication, and Medicare Annual Wellness Visit (AWV) data from the EHR. We examined the association of the eFI with mortality, health care utilization, and injurious falls.

RESULTS

The overall cohort was 55.7% female, 85.7% white, with a mean age of 74.9 (SD = 7.3) years. In the prior 2 years, 32.1% had AWV data. The eFI could be calculated for 9,013 (70.4%) ACO patients. Of these, 46.5% were classified as prefrail (0.10 < eFI ≤ 0.21) and 40.1% frail (eFI > 0.21). Accounting for age, comorbidity, and prior health care utilization, the eFI independently predicted all-cause mortality, inpatient hospitalizations, emergency department visits, and injurious falls (all p < .001). Having at least one functional deficit captured from the AWV was independently associated with an increased risk of hospitalizations and injurious falls, controlling for other components of the eFI.

CONCLUSIONS

Construction of an eFI from the EHR, within the context of a managed care population, is feasible and can help to identify vulnerable older adults. Future work is needed to integrate the eFI with claims-based approaches and test whether it can be used to effectively target interventions tailored to the health needs of frail patients.

Intensive vs Standard Blood Pressure Control in Adults 80 Years or Older: A Secondary Analysis of the Systolic Blood Pressure Intervention Trial

OBJECTIVES

To evaluate the effect of intensive systolic blood pressure (SBP) control in older adults with hypertension, considering cognitive and physical function.

DESIGN

Secondary analysis.

SETTING

Systolic Blood Pressure Intervention Trial (SPRINT) PARTICIPANTS: Adults 80 years or older.

INTERVENTION

Participants with hypertension but without diabetes (N = 1167) were randomized to an SBP target below 120 mm Hg (intensive treatment) vs a target below 140 mm Hg (standard treatment).

MEASUREMENTS

We measured the incidence of cardiovascular disease (CVD), mortality, changes in renal function, mild cognitive impairment (MCI), probable dementia, and serious adverse events. Gait speed was assessed via a 4-m walk test, and the Montreal Cognitive Assessment (MoCA) was used to quantify baseline cognitive function.

RESULTS

Intensive treatment led to significant reductions in cardiovascular events (hazard ratio [HR] = .66; 95% confidence interval [CI] = .49-.90), mortality (HR = .67; 95% CI = .48-.93), and MCI (HR = .70; 95% CI = .51-.96). There was a significant interaction (P < .001) whereby participants with higher baseline scores on the MoCA derived strong benefit from intensive treatment for a composite of CVD and mortality (HR = .40; 95% CI = .28-.57), with no appreciable benefit in participants with lower scores on the MoCA (HR = 1.33 = 95% CI = .87-2.03). There was no evidence of heterogeneity of treatment effects with respect to gait speed. Rates of acute kidney injury and declines of at least 30% in estimated glomerular filtration rate were increased in the intensive treatment group with no between-group differences in the rate of injurious falls.

CONCLUSION

In adults aged 80 years or older, intensive SBP control lowers the risk of major cardiovascular events, MCI, and death, with increased risk of changes to kidney function. The cardiovascular and mortality benefits of intensive SBP control may not extend to older adults with lower baseline cognitive function.

TRIAL REGISTRATION

Clinicaltrials.gov identifier: NCT01206062. J Am Geriatr Soc 68:496-504, 2020.

Annual Wellness Visits and Influenza Vaccinations among Older Adults in the US

OBJECTIVES

Investigate whether combinations of sociodemographic factors, chronic conditions, and other health indicators pose barriers for older adults to access Annual Wellness Visits (AWVs) and influenza vaccinations.

METHODS

Data on 4999 individuals aged ≥65 years from the 2012 wave of the Health and Retirement Study linked with Medicare claims were analyzed. Conditional Inference Tree (CIT) and Random Forest (CIRF) analyses identified the most important predictors of AWVs and influenza vaccinations. Multivariable logistic regression (MLR) was used to quantify the associations.

RESULTS

Two-year uptake was 22.8% for AWVs and 65.9% for influenza vaccinations. For AWVs, geographical region and wealth emerged as the most important predictors. For influenza vaccinations, number of somatic conditions, race/ethnicity, education, and wealth were the most important predictors.

CONCLUSIONS

The importance of geographic region for AWV utilization suggests that this service was unequally adopted. Non-Hispanic black participants and/or those with functional limitations were less likely to receive influenza vaccination.

Hospital utilization and expenditures among a nationally representative sample of Medicare fee-for-service beneficiaries 2 years after receipt of an Annual Wellness Visit

Medicare's Annual Wellness Visit (AWV) provides an opportunity to link beneficiaries to cancer screenings and immunizations, however, research has not examined its effectiveness. The aim of this study was to examine the effect of receiving an AWV on outcomes while accounting for the healthy user effect. This study used 2013-2017 Medicare claims data to compare hospital utilization and total expenditures among a 5% random sample of Medicare fee-for-service (FFS) beneficiaries with and without AWV use in 2014 (228,053 AWV users were propensity-score matched to 228,053 nonusers). Linear fixed effects regression models examined differences in study outcomes 12 and 24 months after AWV use, controlling for baseline differences in sociodemographics, health status, utilization, and accountable care organization attribution. The proportion of Medicare FFS beneficiaries that used the AWV increased from 13% in 2013 to 24% in 2017. Users of the AWV had a marginally significant reduction in Medicare spending 12 months (-$122, 95% CI -$256, $11, p = 0.073) and significant reductions (-$162, 95% CI, -$310, -$14, p = 0.032) 24 months after the visit, relative to non-users. However it remains unclear what is driving these savings as there was no change in hospital-related utilization and results may still be biased due to inherent differences between users and non-users. The AWV provides an opportunity for providers to focus on prevention and geriatric needs not covered in typical office visits. Practices adopting AWVs have noted increased revenue, more stable patient populations, and stronger provider-patient relationships. While utilization remains low, it is steadily increasing over time.

Complex Patients and Quality of Care in Medicare Advantage

OBJECTIVES

New federal policies aim to focus Medicare Advantage (MA) plans on the needs of individuals with complex health conditions. Our objective was to examine enrollment patterns of MA beneficiaries with complex needs and the association of enrollment patterns with MA plan performance.

DESIGN

Cross-sectional study.

SETTING

The 2015 Medicare Health Outcome Survey baseline survey.

PARTICIPANTS

A total of 273 336 MA beneficiaries enrolled in 467 MA plans who lived in the community.

MEASUREMENTS

Complex patients included individuals 65 years and older with multiple self-reported chronic conditions and functional limitations and all patients with disabilities younger than 65 years. Outcomes included 27 performance measures reported under the 5-Star Part C Star Rating. Linear probability regression was used to examine the association of concentration of complex patients and performance measures.

RESULTS

Most complex patients were enrolled in general MA plans. Concentration of complex patients ranged from 25.9% in MA contracts in the lowest quintile to 68.9% in the top quintile. MA contract performance scores generally decreased as the concentration of complex patients increased. After adjusting for contract and enrollee characteristics, MA contracts with more complex patients performed less well on half of the Part C performance measures including patient experience, preventive care, and chronic care measures.

CONCLUSION

MA contracts with a high concentration of complex patients have lower performance scores on more than half of Part C measures. Further study is needed to understand whether these performance measures are capturing the delivery of poor care, deficiencies in the health plan's care systems, or whether some measures may not be appropriate for complex patients. J Am Geriatr Soc 68:395-402, 2020.

How Do Accountable Care Organizations Deliver Preventive Care Services? A Mixed-Methods Study

BACKGROUND

The Affordable Care Act and the introduction of accountable care organizations (ACOs) have increased the incentives for patients and providers to engage in preventive care, for example, through quality metrics linked to disease prevention. However, little is known about how ACOs deliver preventive care services.

OBJECTIVE

To understand how Medicare ACOs provide preventive care services to their attributed patients.

DESIGN

Mixed-methods study using survey data reporting Medicare ACO capabilities in patient care management and interviews with high-performing ACOs.

PARTICIPANTS

ACO executives completed survey data on 283 Medicare ACOs. These data were supplemented with 39 interviews conducted across 18 Medicare ACOs with executive-level leaders and associated clinical and managerial staff.

MAIN MEASURES

Survey measures included ACO performance, organizational characteristics, collaboration experience, and capabilities in care management and quality improvement. Telephone interviews followed a semi-structured interview guide and explored the mechanisms used, and motivations of, ACOs to deliver preventive care services.

KEY RESULTS

Medicare ACOs that reported being comprehensively engaged in the planning and management of patient care - including conducting reminders for preventive care services - had more beneficiaries and had a history of collaboration experience, but were not more likely to receive shared savings or achieve high-quality scores compared to other surveyed ACOs. Interviews revealed that offering annual wellness visits and having a system-wide approach to closing preventive care gaps are key mechanisms used by high-performing ACOs to address patients' preventive care needs. Few programs or initiatives were identified that specifically target clinically complex patients. Aside from meeting patient needs, motivations for ACOs included increasing patient attribution and meeting performance targets.

CONCLUSIONS

ACOs are increasingly motivated to deliver preventive care services. Understanding the mechanisms and motivations used by high-performing ACOs may help both providers and payers to increase the use of preventive care.

Diffusion Of Innovations Theory, Principles, And Practice

Aspects of the research and practice paradigm known as the diffusion of innovations are applicable to the complex context of health care, for both explanatory and interventionist purposes. This article answers the question, "What is diffusion?" by identifying the parameters of diffusion processes: what they are, how they operate, and why worthy innovations in health care do not spread more rapidly. We clarify how the diffusion of innovations is related to processes of dissemination and implementation, sustainability, improvement activity, and scale-up, and we suggest the diffusion principles that can be readily used in the design of interventions.

Association of Physician Group Participation in Accountable Care Organizations With Patient Social and Clinical Characteristics

IMPORTANCE

Accountable care organizations (ACOs) may increase health care disparities by excluding physician groups that care for socially and clinically vulnerable patients.

OBJECTIVE

To estimate the association between the patient characteristics of a physician group and the group's participation in a newly formed ACO.

DESIGN, SETTING, AND PARTICIPANTS

This retrospective cohort study investigated a 20% random sample of US Medicare fee-for-service beneficiaries attributed to physician groups identified in Medicare claims before ACO participation from January 1, 2010, through December 31, 2011. Physician groups that participated and did not participate in the Medicare Shared Savings Program (MSSP) from January 1, 2012, through December 31, 2014, were identified in the Medicare MSSP 2014 provider file. Data analyses were conducted from September 1, 2017, to March 30, 2018.

EXPOSURES

Using multivariable regression, the association between physician group participation in the MSSP and the group's patients' characteristics before ACO formation was estimated focusing on measures of the vulnerability of the group's patients. All ACO-participating physician groups were compared with ACO-nonparticipating physician groups for reference, and estimates were made at the physician and patient level.

MAIN OUTCOMES AND MEASURES

Percentage of a physician group's patient panel that was socially vulnerable (based on race, dual Medicare and Medicaid enrollment, or living in high-poverty zip code) or clinically high risk.

RESULTS

Among 67 891 physician groups caring for 5 394 181 patients, 7215 physician groups (10.6%) participated in an MSSP ACO by 2014. Comparing mean percentages across practices, the patients of non-ACO-participating physician groups, more patients of ACO-participating physician groups were black (mean percentage across practices, 12.1% vs 10.6%), dually enrolled in Medicare and Medicaid (23.0% vs 19.3%), living in poverty (10.7% vs 11.1%), and high risk (34.2% vs 30.2%). After adjustment, physician groups that participated in an ACO had 5.1 percentage points (95% CI, 0.1-10.0 percentage points; P = .05) more dually enrolled patients and 4.0 percentage points (95% CI, 1.9-6.1 percentage points; P < .001) more high-risk patients. At the patient level, patients who were at high risk were more likely to be attributed to a group that became part of an ACO, with 4.5 percentage points (95% CI, 0.5-8.5 percentage points; P = .03) more high-risk patients being attributed to an ACO, but other associations were not statistically different from zero.

CONCLUSIONS AND RELEVANCE

Accountable care organizations may be an effective approach to target care among high-risk patients. In this study, physician groups that participated in the MSSP ACO program cared for more clinically vulnerable patients than did nonparticipating groups, and ACO-participating physician groups cared for an equally large number of socially vulnerable patients compared with nonparticipating physician groups.