Robert S. Saunders, PhD

Penetration of Medicare Shared Savings Program accountable care organizations and Medicare Advantage was not associated with substantive changes in health care use among commercial enrollees.

From 2013 to 2016, Medicare Shared Savings Program accountable care organizations (ACOs) improved quality. Continued infrastructure development funding, better relationships with postacute care facilities, and shared learnings among diverse ACOs would maximize quality improvement.

From 2013 to 2016, successful Medicare Shared Savings Program accountable care organizations reduced spending by shifting expenditures from the inpatient and postacute care setting to the physician office setting.