Despite training to provide care across the continuum of health delivery settings, the proportion of family physicians (FPs) reporting inpatient care has decreased by 26% between 2013 and 2017, leaving approximately 1 in 4 of FPs practicing hospital medicine in 2017. Policy makers, payers, and leaders in medical education should closely track the impact of these trends, given previous evidence associating better cost and utilization outcomes with broader scope of practice. Comprehensiveness is one of the Starfield’s core tenets of primary care. Patients of family physicians (FPs) with a broader scope of practice have been shown to have lower overall health care spending.

Purpose: Primary care physicians are increasingly participating in accountable care organizations (ACOs). While prior studies have identified ACO and patient characteristics associated with savings, none have examined characteristics of the communities served by ACOs. Our objective was to assess the relationship between an ACO’s service area characteristics and its savings rate.

Methods: In this cross-sectional study, we used the Centers for Medicare and Medicaid Services 2014 Medicare Shared Savings Program ACO Provider and Beneficiary, and Public Use Files to identify ACO and beneficiary characteristics.

Graduate medical education (GME), the training of resident physicians, is funded by GME payments to hospitals and health systems, largely from Medicare and Medicaid. The number, specialty, and practice locations1 of future physicians is heavily dependent on how GME positions are determined and placed. In 2015, Medicare alone provided $12.5 billion in GME payments to teaching hospitals. Yet, shortages persist in select specialties, such as primary care, and in rural and underserved areas.