Kanter, Genevieve P.Polsky, Daniel E.Werner, Rachel M.2023-05-222023-05-222019-11-042019-12-24https://repository.upenn.edu/handle/20.500.14332/38280Accountable Care Organizations (ACOs) are groups of physicians and hospitals that jointly contract to care for a patient population. ACO contracts incentivize coordination of care across providers. This can lead to greater consolidation of physician practices, which can in turn generate higher costs and lower quality. Given this, the study asks, as ACOs enter health care markets, do physician practices grow larger?http://creativecommons.org/licenses/by-nd/4.0/accountable care organizationsphysician consolidationhospitalsHealth and Medical AdministrationHealth Services AdministrationHealth Services ResearchBrief