The largest physician group in the U.S. has nearly 14,000 doctors, according to a new analysis from Definitive Healthcare provided to MedPage Today.
Physician groups come in many varieties, from large health system-affiliated groups to contract management groups to small practices owned by physicians. Definitive Healthcare says it tracks more than 125,000 such groups — but the top 20 are mostly dominated by those run by large health systems.
Here’s a look at the top 20 physician groups in the U.S. this year and how many physicians they employ (data are current through April 2023):
1. Southern California Permanente Medical Group: 13,716
2. The Permanente Medical Group (Northern California): 11,570
3. Select Physical Therapy; Florida: 9,142
4. HCA Florida Healthcare Physicians; Florida: 7,213
5. University of Pittsburgh Physicians; Pennsylvania: 5,742
6. Mayo Clinic Physicians; Minnesota: 5,581
7. RWJBarnabas Health Medical Group; New Jersey: 5,570
8. NYU Langone Health Physicians; New York: 5,094
9. Northwestern Medical Group; Illinois: 5,029
10. HealthCare Partners IPA; New York: 5,018
11. Northwell Health Physician Partners; New York: 4,954
12. Hill Physicians Medical Group; California: 4,556
13. Penn Medicine Physicians; Pennsylvania: 4,465
14. Ascension Medical Group; Indiana: 4,444
15. Ballad Health Physicians; Tennessee: 4,313
16. Banner Health Physicians; Arizona: 4,227
17. Mercy Clinic Physicians; Oklahoma: 4,131
18. Beaumont Health Physicians; Michigan: 4,093
19. Advocate Medical Group; Illinois: 3,985
20. Geisinger Health Physicians; Pennsylvania: 3,885
Definitive Healthcare also tracks integrated delivery networks (IDNs) and how many physician groups they have in their networks.
The following is a list of the largest IDNs by the number of affiliated physician groups as of April 2023:
1. HCA Healthcare; Tennessee: 158
2. Novant Health; North Carolina: 74
3. CommonSpirit Health; Illinois: 54
4. Community Health Systems; Tennessee: 53
5. Willis-Knighton Health System; Louisiana: 44
6. OptumCare; Minnesota: 39
7. LifePoint Health; Tennessee: 37
8. Trinity Health; Michigan: 34
9. Northside Hospital System; Georgia: 31
10. Universal Health Services; Pennsylvania: 28
11. Tenet Healthcare; Texas: 26
12. Ascension Health; Missouri: 21
12. Prime Healthcare Services; California: 21
14. University of Pittsburgh Medical Center; Pennsylvania: 19
14. Acadia Healthcare; Tennessee: 19
16. Baylor Scott & White Health; Texas: 17
16. Allegheny Health Network; Pennsylvania: 17
16. Mass General Brigham; Massachusetts: 17
16. Providence St. Joseph Health; Washington: 17
20. UNC Health; North Carolina: 16
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Kristina Fiore leads MedPage’s enterprise & investigative reporting team. She’s been a medical journalist for more than a decade and her work has been recognized by Barlett & Steele, AHCJ, SABEW, and others. Send story tips to k.fiore@medpagetoday.com. Follow
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