Updated October 2026

Medical groups in Ohio

Medical group directory
Ohio

Medical groups: 3,351
Multi-specialty: 691
Single-specialty: 2,660
More than one site: 1,761
100+ physicians: 95

There are 3,351 medical groups in Ohio with a Medicare PAC ID. Cleveland Clinic is the largest, with 4,371 Ohio physicians. The Cleveland Clinic Foundation has the most physicians across its groups, 4,899, and 65% of Ohio groups are independent.

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Cleveland Clinic is the largest medical group in Ohio, with 4,371 physicians

Ranked by physicians with an Ohio address linked to each group. University Hospitals Medical Practices is second with 1,959, and OhioHealth Physician Group third with 1,825. 95 Ohio groups have 100 or more physicians.

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Medical groups in Ohio, ranked by physicians
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1	Cleveland ClinicIndependence · 371 sites	Parent on file	4,371	8,243	Decision makers
2	University Hospitals Medical PracticesCleveland · 213 sites	Parent on file	1,959	3,682	Decision makers
3	OhioHealth Physician GroupColumbus · 301 sites	Parent on file	1,825	3,310	Decision makers
4	University of Cincinnati PhysiciansCincinnati · 107 sites	Parent on file	1,312	1,990	Decision makers
5	Cincinnati Children'sCincinnati · 100 sites	Parent on file	1,257	2,453	Decision makers
6	MetroHealth Professional GroupCleveland · 50 sites	Parent on file	1,121	2,026	Decision makers
7	University EyecareMentor · 225 sites	Parent on file	909	1,577	Decision makers
8	Pediatric Academic Association (PAA)Columbus · 45 sites	Parent on file	812	1,150	Decision makers
9	Ohio State University PhysiciansColumbus · 50 sites	Parent on file	800	1,450	Decision makers
10	Nationwide Children's HospitalColumbus · 48 sites	Parent on file	796	1,183	Decision makers
11	TriHealthCincinnati · 110 sites	Parent on file	729	1,063	Decision makers
12	Akron Children's HospitalAkron · 63 sites	Parent on file	655	1,159	Decision makers
13	TriHealthCincinnati · 107 sites	Parent on file	622	1,046	Decision makers
14	Wooster Family Health Center (Cleveland Clinic)Independence · 33 sites	Parent on file	601	870	Decision makers
15	Central Ohio Primary CareWesterville · 93 sites	-	559	750	Decision makers
16	Emergency Professional Services of Ohio, Inc.Seaman · 95 sites	-	556	811	Decision makers
17	Kettering Health Medical GroupMiamisburg · 102 sites	Parent on file	487	897	Decision makers
18	ProMedica PhysiciansToledo · 91 sites	Parent on file	451	1,076	Decision makers
19	Miami Valley Hospitalist GroupMoraine · 96 sites	Parent on file	442	654	Decision makers
20	Summa Health Medical GroupAkron · 83 sites	Parent on file	412	743	Decision makers
21	Mercy Health PhysiciansBlue Ash · 48 sites	Parent on file	408	667	Decision makers
22	Premier Health SpecialistsMoraine · 98 sites	Parent on file	395	821	Decision makers
23	Mercy Health PhysiciansBlue Ash · 72 sites	Parent on file	383	672	Decision makers
24	Adena Health SystemChillicothe · 58 sites	Parent on file	358	656	Decision makers
25	Partners Physician GroupAkron · 57 sites	Parent on file	352	664	Decision makers
26	Ohio State University PhysiciansColumbus · 27 sites	Parent on file	317	570	Decision makers
27	Dayton Children's HospitalDayton · 19 sites	Parent on file	309	486	Decision makers
28	UT Physicians GroupToledo · 35 sites	Parent on file	307	529	Decision makers
29	Oxford Physical Therapy CentersMason · 68 sites	-	300	415	Decision makers
30	Cleveland ClinicIndependence · 43 sites	Parent on file	292	320	Decision makers
31	Mercy Health PhysiciansBlue Ash · 67 sites	Parent on file	270	457	Decision makers
32	US Acute Care Solutions (USACS)Springfield · 39 sites	Parent on file	267	427	Decision makers
33	Columbus RadiologyColumbus · 246 sites	Parent on file	265	288	Decision makers
34	Mercy Health PhysiciansBlue Ash · 63 sites	Parent on file	253	475	Decision makers
35	Mercy Health PhysiciansBlue Ash · 47 sites	Parent on file	245	383	Decision makers
36	Ohio Emergency Professionals, Inc.Columbus · 38 sites	-	244	389	Decision makers
37	Kettering Health Medical GroupMiamisburg · 105 sites	Parent on file	225	525	Decision makers
38	Premier Gastroenterology Specialists at Upper Valley Medical CenterTroy · 33 sites	Parent on file	225	320	Decision makers
39	ProMedica PhysiciansToledo · 31 sites	Parent on file	220	383	Decision makers
40	Marietta Memorial HospitalMarietta · 38 sites	Parent on file	214	420	Decision makers
41	Ohio State University PhysiciansColumbus · 32 sites	Parent on file	206	382	Decision makers
42	Mercy Health PhysiciansBlue Ash · 33 sites	Parent on file	204	407	Decision makers
43	Community HospitalistsCleveland · 34 sites	Parent on file	200	265	Decision makers
44	OhioHealth Marion Area PhysiciansColumbus · 42 sites	Parent on file	197	395	Decision makers
45	The Christ Hospital Medical AssociatesCincinnati · 44 sites	Parent on file	196	312	Decision makers
46	OhioHealth Urgent CareColumbus · 51 sites	Parent on file	195	431	Decision makers
47	Southern Ohio Medical CenterPortsmouth · 38 sites	Parent on file	195	377	Decision makers
48	Holzer Health SystemGallipolis · 24 sites	Parent on file	190	322	Decision makers
49	ProMedica Children's SpecialistsToledo · 23 sites	Parent on file	187	427	Decision makers
50	Licking Memorial Health ProfessionalsNewark · 33 sites	Parent on file	178	267	Decision makers

Showing 1 to 10 of 3,351 medical groups in Ohio

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

The Cleveland Clinic Foundation has the most physicians in Ohio medical groups, with 4,899 across 25 groups

Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 125 parent organizations have two or more Ohio medical groups. Among health systems, Bon Secours Mercy Health has the most groups, 58. Each clinician counts once per parent organization.

Parent organizations with the most Ohio medical groups
#	Parent organization	Ohio groups	Physicians	HCPs
1	The Cleveland Clinic FoundationHealth system	25	4,899	9,476
2	University Hospitals Health SystemHealth system	20	2,762	5,061
3	OhioHealthHealth system	18	2,171	4,076
4	The Ohio State University Wexner Medical CenterAcademic health system	25	2,012	3,827
5	Bon Secours Mercy HealthHealth system	58	1,947	3,476
6	UC HealthHealth system	4	1,337	2,089
7	Cincinnati Children's Hospital Medical CenterHealth system	2	1,285	2,508
8	Nationwide Children's HospitalHealth system	8	1,148	1,850
9	Cuyahoga CountyLocal government	3	1,121	2,026
10	TriHealthHealth system	12	1,051	1,682

Top 10 of 125 parent organizations with two or more Ohio groups

The Cleveland Clinic FoundationHealth system · 25 Ohio medical groups
Cleveland ClinicMulti-specialty group · Independence
Wooster Family Health Center (Cleveland Clinic)Multi-specialty group · Independence
23 more Ohio groups and their practice sites

See every medical group, site and clinician under The Cleveland Clinic Foundation

Org Hierarchy Explorer maps every group, site of care and clinician under the parent, with the leaders at each group.

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Source: Dmand AI Org Hierarchy Data

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Dmand AI maps the owners, administrators and physician leaders at each of the 3,351 Ohio medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.

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65% of Ohio 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.

Ohio medical groups by ownership

Independent2,18965%
Health system or hospital41512%
Platform or corporate owner32710%
Community or government2237%
Other organization1976%

Source: Dmand AI Org Hierarchy Data

689 Ohio 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 Ohio, with 946

Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 784, and 691 Ohio groups are multi-specialty.

Source: Dmand AI Professional Profile Data

75,513 Ohio HCPs work in Ohio medical groups, 31,302 of them physicians

Each clinician is counted once, across every Ohio group they are linked to. Only clinicians with an Ohio address are counted.

HCPs in Ohio medical groups by type

Physicians (MD, DO)31,30241%
Nurses and nurse practitioners19,78526%
Behavioral health clinicians11,58515%
Physician assistants5,5657%
Therapists (PT and OT)1,9883%
Other HCPs5,2887%

Source: Dmand AI Affiliation Data

Columbus has the most medical groups in Ohio, with 275

275medical groups in Columbus 197medical groups in Cincinnati 133medical groups in Canton 114medical groups in Dayton 98medical groups in Toledo 84medical groups in Cleveland

More Ohio cities with medical groups

Source: Doctors and Clinicians National Downloadable File (CMS)

Each Ohio 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

Free account: 30 days free, self-serve, no credit card.

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

Sources for the Ohio 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 with a Medicare PAC ID.

FAQ

Frequently asked questions about medical groups in Ohio

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 Ohio?

There are 3,351 medical groups in Ohio with a Medicare PAC ID: 691 multi-specialty and 2,660 single-specialty.

What is the largest medical group in Ohio?

Cleveland Clinic in Independence, with 4,371 physicians and 8,243 HCPs with an Ohio address. University Hospitals Medical Practices is second with 1,959, and OhioHealth Physician Group is third with 1,825.

Which health system has the most medical groups in Ohio?

By physicians, The Cleveland Clinic Foundation, with 4,899 across 25 groups, followed by University Hospitals Health System with 2,762 and OhioHealth with 2,171.

How many Ohio medical groups are independent?

2,189, or 65%, have no larger parent organization in the Dmand AI org hierarchy. 415 belong to a health system or hospital and 327 to a physician platform or corporate owner.

How many Ohio medical groups practice at a hospital?

689 Ohio 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.

How do I find decision makers at Ohio medical groups?

Open a group's profile for its parent organization and leaders, then get work emails and mobile numbers through Dmand AI's healthcare waterfall enrichment. 30 days free, self-serve, no credit card.

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