Top 10 physician groups by number of physicians  

Physician groups are an essential part of the healthcare industry as they provide patients with comprehensive care across a wide range of specialties.  

Definitive Healthcare tracks more than 125,000 physician groups in the PhysicianGroupView product. We explore which of these physician groups have the highest number of physicians below. 

Top 10 physician groups with greatest number of physicians  

Rank 

Physician Group Name 

State 

# of Physicians 

Southern California Permanente Medical Group 

CA 

11,998 

The Permanente Medical Group 

CA 

10,139 

HCA Florida Healthcare Physicians 

FL 

7,342 

Mayo Clinic Physicians 

MN 

5,375 

HealthCare Partners IPA 

NY 

5,042 

Northwell Health Physician Partners 

NY 

4,697 

Ascension Medical Group 

IN 

4,450 

US Anesthesia Partners 

FL 

3,828 

Geisinger Health Physicians 

PA 

3,695 

10 

Hill Physicians Medical Group 

CA 

3,587 

Fig. 1Data is from Definitive Healthcare’s PhysicianGroupView database. Data is accurate as of June 2022. 

Which physician group has the most physicians? 

Across the top physician groups, there are 60,153 total physicians, with an average of 6,015 physicians.  

Southern California Permanente Medical Group has the most physicians, with 11,998. The Permanente Medical Group has the second-highest number of physicians, with 10,139, and HCA Florida Healthcare Physicians has the third-highest number of physicians, with 7,342.  

Across the top 10 list, many of the physician groups are in highly populated states, like California, Florida and New York. It makes sense that higher staffed physician groups would be in more highly populated states since more physicians are needed to care for the greater number of people.  

What is a physician group? 

A physician group is an organization of physicians who work together to provide patient care. There are both group and solo physician group practices. Overall, physician groups are an important component of healthcare as they help enhance population health.  

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