Updated October 2026

Medical groups in Saint Louis, MO

Medical group directory
Saint Louis, Missouri

Medical groups: 306
Multi-specialty: 69
Single-specialty: 237
More than one site: 161
100+ physicians: 11

There are 306 medical groups in Saint Louis with a Medicare PAC ID. WashU Medicine Psychiatry is the largest, with 2,454 Missouri physicians, followed by SLUCare Physician Group with 868. 58% of Saint Louis groups are independent.

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WashU Medicine Psychiatry is the largest medical group in Saint Louis, with 2,454 physicians

Ranked by physicians with a Missouri address linked to each group based in Saint Louis. SLUCare Physician Group is second with 868, and Mercy Hospital St. Louis third with 477. 11 Saint Louis groups have 100 or more physicians.

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Medical groups in Saint Louis, ranked by physicians
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1	WashU Medicine PsychiatrySaint Louis · 160 sites	Parent on file	2,454	3,750	Decision makers
2	SLUCare Physician GroupSaint Louis · 97 sites	Parent on file	868	1,194	Decision makers
3	Mercy Hospital St. LouisSaint Louis · 35 sites	Parent on file	477	613	Decision makers
4	Mercy Clinic East CommunitiesSaint Louis · 127 sites	Parent on file	476	864	Decision makers
5	BJC Medical GroupSaint Louis · 70 sites	Parent on file	340	580	Decision makers
6	Mercy Clinic South HospitalistsSaint Louis · 20 sites	Parent on file	236	300	Decision makers
7	Mercy Clinic Adult HospitalistsSaint Louis · 16 sites	Parent on file	231	308	Decision makers
8	SSM Health Cardinal Glennon PediatricsSaint Louis · 33 sites	Parent on file	197	376	Decision makers
9	BJC Medical GroupSaint Louis · 40 sites	Parent on file	153	316	Decision makers
10	Mercy Hospital SouthSaint Louis · 12 sites	Parent on file	115	166	Decision makers
11	Esse HealthSaint Louis · 38 sites	-	104	160	Decision makers
12	West County Radiological GroupSaint Louis · 42 sites	-	91	95	Decision makers
13	SSM Health Saint Louis University HospitalSaint Louis · 24 sites	Parent on file	90	184	Decision makers
14	WashU Community SpecialistsSaint Louis · 7 sites	Parent on file	74	121	Decision makers
15	Missouri Baptist Medical CenterSaint Louis · 11 sites	Parent on file	64	168	Decision makers
16	SSM Health Saint Louis University HospitalSaint Louis · 11 sites	Parent on file	62	124	Decision makers
17	Mercy Clinic Electrophysiology, Mercy Heart Hospital St. LouisSaint Louis · 20 sites	Parent on file	57	120	Decision makers
18	Urology of St. LouisSaint Louis · 22 sites	-	53	110	Decision makers
19	Mercy Clinic GastroenterologySaint Louis · 11 sites	Parent on file	51	76	Decision makers
20	Mercy Clinic Adult Critical CareSaint Louis · 8 sites	Parent on file	44	81	Decision makers
21	Heart Care InstituteSaint Louis · 5 sites	Parent on file	44	44	Decision makers
22	Total Access Urgent CareSaint Louis · 42 sites	Parent on file	43	157	Decision makers
23	Affinia HealthcareSaint Louis · 15 sites	Parent on file	39	88	Decision makers
24	Mercy Clinic OB/GYNSaint Louis · 4 sites	Parent on file	35	60	Decision makers
25	BJC Behavioral HealthSaint Louis · 10 sites	Parent on file	33	98	Decision makers
26	St. Louis County Department of Public HealthSaint Louis · 6 sites	Parent on file	33	48	Decision makers
27	Saint Louis Pathology AssociatesSaint Louis · 3 sites	-	28	28	Decision makers
28	Betty Jean Kerr People's Health CentersSaint Louis · 5 sites	Parent on file	27	54	Decision makers
29	South County Anesthesia AssociatesSaint Louis · 5 sites	Parent on file	26	100	Decision makers
30	Family Care Health CentersSaint Louis · 4 sites	Parent on file	25	68	Decision makers
31	Mercy Clinic Trauma and General SurgerySaint Louis · 4 sites	Parent on file	24	63	Decision makers
32	Signature Medical GroupSaint Louis · 7 sites	-	23	55	Decision makers
33	Heart Care InstituteSaint Louis · 4 sites	Parent on file	20	29	Decision makers
34	Missouri Baptist Medical CenterSaint Louis · 3 sites	Parent on file	19	30	Decision makers
35	Mercy Neurology - Medical Tower B Suite 5003-BSaint Louis · 7 sites	Parent on file	18	23	Decision makers
36	Mercy Hospital St. LouisSaint Louis · 6 sites	Parent on file	16	26	Decision makers
37	CareSTL HealthSaint Louis · 14 sites	Parent on file	15	39	Decision makers
38	Mercy Pulmonology - St. Louis Medical Tower ASaint Louis · 5 sites	Parent on file	15	26	Decision makers
39	Ophthalmology ConsultantsSaint Louis · 6 sites	Parent on file	15	24	Decision makers
40	Barnes-Jewish HospitalSaint Louis · 3 sites	Parent on file	15	18	Decision makers
41	Helios Sound Health ServicesSaint Louis · 4 sites	-	14	37	Decision makers
42	St. Louis Heart & VascularSaint Louis · 5 sites	Parent on file	14	27	Decision makers
43	Mercy Clinic Burn Care - Suite 7003BSaint Louis · 7 sites	Parent on file	13	36	Decision makers
44	Mercy Clinic Maternal and Fetal Medicine - Medical Tower BSaint Louis · 1 site	Parent on file	13	18	Decision makers
45	Generation Clinical PartnersSaint Louis · 13 sites	Parent on file	11	15	Decision makers
46	Eye Anesthesia, LLCSaint Louis · 12 sites	-	10	56	Decision makers
47	Mercy Clinic Cardiovascular and Thoracic SurgerySaint Louis · 5 sites	Parent on file	10	24	Decision makers
48	One Behavioral of MissouriSaint Louis · 5 sites	-	10	22	Decision makers
49	Midwest Anesthesia Associates, P.C.Saint Louis · 6 sites	-	10	18	Decision makers
50	Pulmonary Consultants IncSaint Louis · 9 sites	-	10	16	Decision makers

Showing 1 to 10 of 306 medical groups in Saint Louis

Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data

Washington University in St. Louis has the most physicians in Saint Louis medical groups, with 2,507 across 10 groups

Dmand AI maps every Saint Louis medical group to its parent organization, up to the health system or platform at the top. 10 parent organizations have two or more Saint Louis medical groups. Among health systems, Mercy has the most groups, 35. Each clinician counts once per parent organization.

Parent organizations with the most Saint Louis medical groups
#	Parent organization	Saint Louis groups	Physicians	HCPs
1	Washington University in St. LouisAcademic health system	10	2,507	3,841
2	MercyHealth system	35	1,241	2,094
3	SSM Health CareHealth system	6	997	1,573
4	BJC HealthHealth system	11	613	1,238
5	South County AnesthesiaPhysician staffing company	2	27	101
6	St. Luke's Episcopal-Presbyterian HospitalHealth system	2	6	9
7	Excel ImagingTreatment center company	2	5	5
8	CVS HealthDiversified health company	2	4	26
9	Saint Louis Medical ProfessionOutpatient facility	2	4	5
10	Mobile Physical TherapyHome-based care	2	-	7

Parent organizations with two or more Saint Louis groups

Washington University in St. LouisAcademic health system · 10 Saint Louis medical groups
WashU Medicine PsychiatryMulti-specialty group · 160 sites
WashU Community SpecialistsMedical group · 7 sites
8 more Saint Louis groups and their practice sites

See every medical group, site and clinician under Washington University in St. Louis

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Source: Dmand AI Org Hierarchy Data

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58% of Saint Louis medical groups are independent, with no larger parent organization

A group counts as independent when no health system, platform or other organization sits above it in the org hierarchy. Every other group belongs to a larger organization.

Saint Louis medical groups by ownership

Independent17958%
Health system or hospital7224%
Platform or corporate owner227%
Community or government165%
Other organization176%

Source: Dmand AI Org Hierarchy Data

70 Saint Louis medical groups practice at a hospital site

Beyond their own offices, groups practice at the sites of care linked to them in the org hierarchy. A group can practice at several kinds of site, so the shares overlap.

Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data

Primary care groups are the most common medical groups in Saint Louis, with 110

Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 47, and 69 Saint Louis groups are multi-specialty.

Source: Dmand AI Professional Profile Data

10,350 Missouri HCPs work in Saint Louis medical groups, 5,851 of them physicians

Each clinician is counted once, across every Saint Louis group they are linked to. Only clinicians with a Missouri address are counted.

HCPs in Saint Louis medical groups by type

Physicians (MD, DO)5,85157%
Nurses and nurse practitioners2,55425%
Physician assistants6466%
Behavioral health clinicians5515%
Therapists (PT and OT)1982%
Other HCPs5505%

Source: Dmand AI Affiliation Data

Each Saint Louis medical group profile shows the parent, sites, clinicians and identifiers

Clinicians and specialtiesA count by specialty and a sample of the group's cliniciansOn every profile
Practice locationsMain site and a sample of practice locations, with a count of the restOn every profile
Medicare Part B paymentsMedicare payments to the group, from CMSOn every profile
Group NPI and Medicare PAC IDIdentifiers for matching records across sourcesOn every profile
Parent organizationThe health system, platform or owner above the groupOn every profile
Every clinician and siteThe full roster and every practice locationWith a free account
Leader and clinician contactsWork emails and mobile numbers, found on request and then validatedWith a free account
EHR used by the group's cliniciansThe EHR in use at the group's sitesWith a free account

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Sources: Doctors and Clinicians National Downloadable File (CMS), Medicare Physician & Other Practitioners (CMS) and Dmand AI Org Hierarchy Data

Sources for the Saint Louis medical group directory

Sources for the data on this page
Data on this page	Source
Medical groups, specialties and sites	Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Professional Profile Data
Parent organizations and independence	Dmand AI Org Hierarchy Data
Physicians and HCPs	Dmand AI Affiliation Data
Group NPI and PAC ID	NPPES NPI Registry (CMS) and Doctors and Clinicians National Downloadable File (CMS)

Data last refreshed October 2026Report an inaccuracy Remove my information

The directory lists groups based in Saint Louis with a Medicare PAC ID.

FAQ

Frequently asked questions about medical groups in Saint Louis

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many medical groups are in Saint Louis?

There are 306 medical groups based in Saint Louis with a Medicare PAC ID: 69 multi-specialty and 237 single-specialty. 161 of them have more than one site.

What is the largest medical group in Saint Louis?

WashU Medicine Psychiatry, with 2,454 physicians and 3,750 HCPs with a Missouri address. SLUCare Physician Group is second with 868, and Mercy Hospital St. Louis is third with 477.

Which health system has the most medical groups in Saint Louis?

By physicians, Washington University in St. Louis, with 2,507 across 10 groups, followed by Mercy with 1,241 and SSM Health Care with 997.

How many Saint Louis medical groups are independent?

179, or 58%, have no larger parent organization in the Dmand AI org hierarchy. 72 belong to a health system or hospital and 22 to a physician platform or corporate owner.

How many Saint Louis medical groups practice at a hospital?

70 Saint Louis groups practice at a hospital site linked to them in the Dmand AI org hierarchy.

How do I find a medical group's NPI or PAC ID?

Each medical group profile lists the group NPI and Medicare PAC ID at the top, with the main address and phone number. The NPI comes from the NPPES NPI Registry and the PAC ID from CMS Medicare enrollment.

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