Top Physician Groups by Size, Medicare Charges

According to Definitive Healthcare data, there are nearly 200,000 active physician group practices in the U.S., ranging in size from 1-physician solo practices to 8,700-physician practices. Group practices, like those included in the following lists, are generally divided into two categories: single-specialty and multi-specialty. Some physicians work solely as part of a physician group practice, though dual-employment between a group practice and hospital or other care facility is not uncommon.

Independent physician group practices offer greater scheduling flexibility and financial security to physicians than solo physician practices, as well as more employee benefits like health insurance. The larger size of a physician group practice means a wider patient population, allowing physicians to accept greater financial risk in the form of high-risk patients and specialized procedures. Though physician group practices can be a more reliable employment choice than a solo practice, they may not offer as much support in managing administrative tasks and financial risks as hospitals and other traditional care facilities.

The following tables list the largest physician groups by number of physicians and the top physician groups by Medicare charges. According to Definitive Healthcare data, the 25 largest groups by physicians employ a total of 78,000 physicians, with a total of nearly $16.5 billion in Medicare charges. Meanwhile, the largest physician groups by Medicare charges employ just under 45,000 total physicians, reporting over $25.3 billion in Medicare charges.

To read more about independent physician group practices, visit the Definitive Blog.

This report was compiled using 2015 Physician Compare data from the Centers for Medicare and Medicaid Services (CMS), the most recent information available as of May 3, 2018.

 Top Physician Groups By Size, Medicare Charges 

PHYSICIAN GROUP NAME

PHYSICIANS

MEDICARE CHARGES

MAIN SPECIALTY

The Permanente Medical Group

8,711

$237,909,994

Internal Medicine

Southern California Permanente Medical Group

8,274

$207,085,743

Internal Medicine

HealthCare Partners IPA

4,016

$767,901,411 

Internal Medicine

Cleveland Clinic

3,751

$1,385,843,879

Internal Medicine

Mayo Clinic Health System - Rochester

3,407

$337,785,842

Internal Medicine

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