Comparing the Effects of Payment Reform in Medicare ACOs, Commercial ACOs, and Medicare Advantage


Banner Health, a large nonprofit care delivery system in Arizona’s Maricopa County, has captured approximately one-third of its local Medicare market, which is the third-largest in the U.S. Banner has been a Pioneer Accountable Care Organization (ACO) since January 2012 and has a commercial ACO contract in conjunction with Aetna; it has established its own Medicare Advantage plan as well. As a dominant player in a large Medicare market, Banner offers a prime opportunity to examine the impact of various payment reforms on risk selection, quality of care, spending, and use of services over a multiyear period.

Grant Details

Grantee Organization:
President and Fellows of Harvard College
Principal Investigator:
Joseph Newhouse, Ph.D.
Award Amount:
Approval Date:
November 10, 2015

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