Top ACOs by participating physicians number 2015| ��ƽ��

Largest Accountable Care Organizations (ACOs) in the U.S. based on number of participating physicians as of 2015

Characteristic	Number of participating physicians
Montefiore ACO & United HealthCare (Bronx, N.Y.)	4,503
FamilyCare (Portland, Ore.)	3,716
Heritage California ACO (Northridge, Calif.)	3,452
Heritage Provider Network & Anthem Blue Cross of California (Northridge, Calif.)	3,378
Valley Preferred Aetna (Allentown, Pa.)	3,360
Hill Physicians/Dignity Health/UCSF Health Network ACO (San Ramon, Calif.)	3,339
Advocate Physician Partners Accountable Care (Rolling Meadows, Ill.)	3,288
Health Connect Partners (Seattle)	3,087
Physician Organization of Michigan ACO (Ann Arbor)	3,033
Hill Physicians/Dignity Health CalPers ACO (San Ramon, Calif.)	3,032

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Release date

June 2015

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Region

United States

Survey time period

as of June 2015

Supplementary notes

Note: Accountable Care Organizations (ACOs) are groups of doctors, hospitals, and other health care providers, who come together voluntarily to give coordinated high quality care to their Medicare patients. The goal of coordinated care is to ensure that patients, especially the chronically ill, get the right care at the right time, while avoiding unnecessary duplication of services and preventing medical errors.

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This statistic shows the ten largest Accountable Care Organizations (ACOs) in the U.S. based on number of participating physicians, as of June 2015. At that time, FamilyCare from Portland, Oregon, was the nation's second largest ACO, with a total of 3,716 participating physicians.