The 25 largest physician groups in the U.S. and their numbers of physicians:
1. Southern California Permanente Medical Group (Pasadena): 13,547
2. The Permanente Medical Group (Oakland, Calif.): 11,209
3. Select Physical Therapy (King of Prussia, Pa.): 9,055
4. HCA Florida Healthcare Physicians (Davie): 7,192
5. Mayo Clinic Physicians (Rochester, Minn.): 5,554
6. University of Pittsburgh (Pa.) Physicians: 5,401
7. NYU Langone Health Physicians (New York City): 5,089
8. Northwestern Medical Group (Chicago): 5,046
9. HealthCare Partners IPA (Garden City, N.Y.): 5,022
10. Northwell Health Physician Partners (New Hyde Park, N.Y.): 4,909
11. RWJBarnabas Health Medical Group (West Orange, N.J.): 4,607
12. Ascension Medical Group (St. Louis): 4,585
13. Penn Medicine Physicians (Philadelphia): 4,238
14. Banner Health Physicians (Phoenix): 4,063
15. Mercy Clinic Physicians (Chesterfield, Mo.): 3,938
16. Beaumont Health Physicians (Dearborn, Mich.): 3,936
17. Geisinger Health Physicians (Danville, Pa.): 3,872
18. US Anesthesia Partners (Dallas): 3,761
19. Healthcare Associates in Medicine (Staten Island, N.Y.): 3,615
20. Hill Physicians Medical Group (San Ramon, Calif.): 3,573
21. Advocate Medical Group (Downers Grove, Ill.): 3,533
22. Lancaster (Pa.) General Health Physicians: 3,434
23. Cleveland Clinic: 3,351
24. Piedmont Healthcare Physicians (Atlanta): 3,307
25. Mount Sinai Doctors (New York City): 3,287
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