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Ranked listRefreshed monthly

The 10 largest medical groups in Missouri by physicians

WashU Medicine Psychiatry is the largest medical group in Missouri, with 3,029 physicians, followed by Mercy Clinic Family Medicine - Hollister in Hollister (1,069) and SLUCare Physician Group in Saint Louis (1,048).

Updated Physicians linked to each group in CMS enrollment and the Dmand AI databaseHow we ranked

Rank by
Location
Missouri
  1. WashU Medicine PsychiatrySaint Louis · Multi-specialty3,029physicians4,478HCPs
  2. Mercy Clinic Family Medicine - HollisterHollister · Multi-specialty1,069physicians2,004HCPs
  3. SLUCare Physician GroupSaint Louis · Multi-specialty1,048physicians1,437HCPs
  4. University of Missouri Health CareColumbia · Multi-specialty907physicians1,456HCPs
  5. Saint Luke's Medical GroupKansas City · Multi-specialty837physicians1,511HCPs
  6. Mercy Hospital St. LouisSaint Louis · Multi-specialty532physicians682HCPs
  7. SSM Health Medical GroupFenton · Multi-specialty514physicians795HCPs
  8. SSM Health Medical GroupFenton · Multi-specialty509physicians841HCPs
  9. Mercy Clinic East CommunitiesSaint Louis · Multi-specialty507physicians938HCPs
  10. Children's MercyKansas City · Multi-specialty495physicians913HCPs

The 10 largest of 1,013 Missouri medical groups that report physicians. Ranks compare size, not quality of care.

Every medical group in Missouri

The median Missouri medical group has 4 physicians

1,013 Missouri medical groups report physicians. The median medical group has 4 physicians, so WashU Medicine Psychiatry is about 757 times that size.

the size of the median Missouri medical group, which has 4 physicians
757×
of the 1,013 Missouri medical groups that report physicians
1%

How we ranked the largest Missouri medical groups

Measure
Physicians linked to each group in CMS enrollment and the Dmand AI database.
What counts as a group
One Medicare PAC ID. A group that bills under several names counts once.
Field
1,013 Missouri medical groups in the Dmand AI database report physicians.
Ties
Medical groups with the same number share a rank.
HCPs
Healthcare professionals with a current link to the group in the Dmand AI database.
What a rank means
Size only. A rank compares physicians; it says nothing about quality of care.
Refresh
Monthly. Updated Oct 28, 2026.

FAQ

Questions about the largest Missouri medical groups

Answers from the same data, updated monthly.

What is the largest medical group in Missouri?

WashU Medicine Psychiatry in Saint Louis, with 3,029 physicians. Mercy Clinic Family Medicine - Hollister is second with 1,069.

What are the 10 largest medical groups in Missouri?

By physicians: WashU Medicine Psychiatry (3,029), Mercy Clinic Family Medicine - Hollister (1,069), SLUCare Physician Group (1,048), University of Missouri Health Care (907), Saint Luke's Medical Group (837), Mercy Hospital St. Louis (532), SSM Health Medical Group (514), SSM Health Medical Group (509), Mercy Clinic East Communities (507), Children's Mercy (495).

How many physicians does a typical Missouri medical group have?

The median Missouri medical group that reports physicians has 4 physicians, out of 1,013 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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