Across the country, there are more than 251,000 physician and non-physician primary care providers participating in ACOs, according to healthcare marketing research firm SK&A.
SK&A conducted extensive research of the 602 identified ACOs in the U.S., including Medicare Shared Savings Program ACOs, Pioneer ACOs, Medicare and non-Medicare commercial ACOs, and Medicaid ACOs.
Here are the top 30 ACOs with the largest physician networks, ranked by total number of participating physicians, as presented by SK&A.
1. Montefiore ACO & United HealthCare (Bronx, N.Y.) — 4,503 physicians
2. FamilyCare (Portland, Ore.) — 3,716
3. Heritage California ACO (Northridge, Calif.) — 3,452
4. Heritage Provider Network & Anthem Blue Cross of California (Northridge, Calif.) —3,378
5. Valley Preferred Aetna (Allentown, Pa.) — 3,360
6. Hill Physicians/Dignity Health/UCSF Health Network ACO (San Ramon, Calif.) — 3,339
7. Advocate Physician Partners Accountable Care (Rolling Meadows, Ill.) — 3,323 8.Valley Preferred Cigna (Allentown, Pa.) — 3,288
9. Health Connect Partners (Seattle) — 3,087
10. Physician Organization of Michigan ACO (Ann Arbor) — 3,033
11. Hill Physicians/Dignity Health CalPers ACO (San Ramon, Calif.) — 3,032
12. Weill Cornell Physician Organization (New York City) — 2,946
13. Cleveland Clinic Cigna ACO — 2,898
14. Hill Physicians, St. Mary’s Medical Center, Saint Francis Memorial Hospital, & UCSF Medical Center Blue Shield (San Francisco) —2,888
15. AdvocateCare Blue Cross Blue Shield of Illinois (Downers Grove) —2,829
16. Mercy ACO & Humana (Chesterfield, Mo.) — 2,700
17. AllCare IPA & Doctors Medical Center & Blue Shield of California (Modesto, Calif.) — 2,622
18. Indiana University Health ACO (Indianapolis) — 2,413
19. Providence Health & Services CA Facey Medical Group & Blue Shield of California (Burbank) — 2,412
20. Health Texas Provider Network & Cigna (Dallas) — 2,351
21. Tenet Healthcare Corporation & Humana (Dallas) — 2,351
22. Montefiore Accountable Care Organization (Bronx, N.Y.) — 2,308
23. Scripps Integrated Delivery Network (San Diego) — 2,241
24. Plus Accountable Care Organization (Fort Worth, Texas). — 2,235
25. Baylor Quality Alliance (Dallas) — 2,198
26. Renaissance Physician Organization (Houston) — 2,135
27. Aurora Health Accountable Care Network Aetna (Milwaukee) — 2,127
28. Health Share of Oregon (Portland, Ore.) — 2,108
29. Renaissance Physician Organization & Cigna (Houston) — 2,094
30. OneCare Vermont Accountable Care Organization (Colchester, Vt.) — 2,029
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