Ranked list
The 10 largest medical groups in California by practice locations
The same ranking for California medical groups.
Ranked listRefreshed monthly
The 10 largest medical groups in the US by practice locations
The Permanente Medical Group, Inc. has the most practice locations of any medical group in the US, 1,324, followed by Southern California Permanente Medical Group in Pasaden (1,141) and Northwell Health Physician Partners Cardiology at Great Neck in Westbury (1,085). Together the 10 leaders hold 8,088 locations across eight states.
- The Permanente Medical Group, Inc.1,324locations12,229physicians
- Southern California Permanente Medical Group1,141locations11,438physicians
- Northwell Health Physician Partners Cardiology at Great Neck1,085locations6,536physicians
- Athletico Physical Therapy743locations9physicians
- MBB Radiology714locations1,402physicians
- Legacy Healthcare Services668locations1,727physicians
- NYU Langone Orthopedic Surgery Associates636locations5,858physicians
- Signify Health629locations1,658physicians
- Privia Medical Group577locations1,564physicians
- Novant Health Indian Land Primary Care571locations2,048physicians
The 10 highest of 114,849 US medical groups that report practice locations. Ranks compare size, not quality of care.
Every US medical group in the directoryThe 10 top US medical groups hold 1.6% of all practice locations
114,849 US medical groups report practice locations, 492,643 practice locations in all. The 10 on this list hold 8,088 of it. The median medical group has 1 location, so The Permanente Medical Group, Inc. is about 1,324 times that size.
- of all practice locations at US medical groups that report them
- 1.6%
- the size of the median US medical group, which has 1 location
- 1,324×
- of the 114,849 US medical groups that report practice locations
- <0.1%
How we ranked the top US medical groups
- Measure
- Practice locations on file for each group.
- What counts as a group
- One Medicare PAC ID. A group that bills under several names counts once.
- Field
- 114,849 US medical groups in the Dmand AI database report practice locations.
- Ties
- Medical groups with the same number share a rank.
- What a rank means
- Size only. A rank compares practice locations; it says nothing about quality of care.
- Refresh
- Monthly. Updated Oct 28, 2026.
FAQ
Questions about the top US medical groups
Answers from the same data, updated monthly.
Which US medical group has the most practice locations?
The Permanente Medical Group, Inc. in Pleasanton, California, with 1,324 locations. Southern California Permanente Medical Group is second with 1,141.
What are the top 10 US medical groups by practice locations?
The Permanente Medical Group, Inc. (1,324), Southern California Permanente Medical Group (1,141), Northwell Health Physician Partners Cardiology at Great Neck (1,085), Athletico Physical Therapy (743), MBB Radiology (714), Legacy Healthcare Services (668), NYU Langone Orthopedic Surgery Associates (636), Signify Health (629), Privia Medical Group (577), Novant Health Indian Land Primary Care (571).
Which state has the most of the 10 top medical groups?
California and New York, with two each.
How many practice locations does a typical US medical group have?
The median US medical group that reports practice locations has 1 location, out of 114,849 that report them.
How often is this list updated?
Every month, when the Dmand AI database refreshes. This version is from Oct 28, 2026.
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