The largest physician group in the U.S. has nearly 12,000 doctors, according to a .
The top 10 physician groups have more than 60,000 doctors total, according to data from the healthcare analytics firm's PhysicianGroupView product.
Definitive Healthcare shared an extended list of the top 20 physician groups with 51˶:
1. Southern California Permanente Medical Group; CA: 11,998
2. The Permanente Medical Group; CA: 10,139
3. HCA Florida Healthcare Physicians; FL: 7,342
4. Mayo Clinic Physicians; MN: 5,375
5. HealthCare Partners IPA; NY: 5,042
6. Northwell Health Physician Partners; NY: 4,697
7. Ascension Medical Group; IN: 4,450
8. U.S. Anesthesia Partners; FL: 3,828
9. Geisinger Health Physicians; PA: 3,695
10. Hill Physicians Medical Group; CA: 3,587
11. NYU Langone Health Physicians; NY: 3,584
12. Cleveland Clinic; OH: 3,511
13. Healthcare Associates in Medicine; NY: 3,456
14. Mount Sinai Doctors; NY: 3,359
15. Beaumont Health Physicians; MI: 3,110
16. University of Pittsburgh Physicians; PA: 3,077
17. Vituity; CA: 3,003
18. Massachusetts General Physicians Organization; MA: 3,000
19. University of Penn Medical Group; PA: 2,835
20. University of Michigan Medical Group; MI: 2,780
Physician groups come in many varieties, from large hospital or health system-affiliated groups, to contract management groups (CMGs), all the way down to small practices owned by physicians. Definitive Healthcare says it tracks more than 125,000 such groups.
In addition to hospitals/health systems, CMGs, and individual physicians, these groups can also be owned by private equity groups and insurers, as previously reported in a 51˶ investigation.
Over the past several decades, physicians have increasingly become employees rather than owners of independent practices. Last year, an American Medical Association survey found that the share of physicians in private practice for the first time since the biennial survey was created a decade prior.
Joseph Sellers, MD, president of the Medical Society of the State of New York, previously told 51˶ that the trend "has been going on for probably 40 years."
"There has been a change from physicians working in solo practice into group practices, into larger groups, and into groups affiliated [with] or groups owned by a health system, similar to the consolidation of our hospitals from individual hospitals into systems," Sellers said at the time.
Physicians and healthcare economic experts previously told 51˶ that consolidation, financial pressures, changing generational perspectives, and the pandemic will continue to drive and accelerate the trend toward employment for physicians.
"The economics, the cost, the complexity of healthcare does seem to be pushing into consolidation more and more," Sellers said earlier. "But as we do that consolidation ... we need to make sure we keep our eye on why we go into healthcare, and that is to take care of patients."