Updated October 2026

Largest primary care groups in Ohio

Medical group directory
Ohio
Primary care

Groups: 946
Internal Medicine groups: 382
Nurse Practitioner groups: 307
Internal medicine specialists: 7,319
Nurse practitioner specialists: 1,693

There are 946 primary care groups in Ohio with a Medicare PAC ID: 382 internal medicine, 307 nurse practitioner, 223 family medicine, 24 physician assistant, 5 general practice and 4 clinical nurse specialist. Cleveland Clinic is the largest internal medicine group, with 1,338 internal medicine specialists, and The Little Clinic the largest nurse practitioner group, with 445 nurse practitioner specialists.

Find the decision makers at all 946 Ohio primary care groups

Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.

View contacts for free

Cleveland Clinic is the largest primary care 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. 58 Ohio groups have 100 or more physicians.

Filter this list with a free account

Sort and filter all 946 Ohio primary care groups by city, parent organization, group size, EHR in use and decision makers in Dmand AI.

Filter in Dmand AI

Primary care groups in Ohio, ranked by physicians, 51 to 100
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
51	NOMS HealthcareSandusky · 79 sites	-	125	309	Decision makers
52	Ashtabula Regional Medical CenterAshtabula · 10 sites	Parent on file	123	175	Decision makers
53	Cleveland Clinic Mercy HospitalIndependence · 18 sites	Parent on file	122	265	Decision makers
54	Firelands Physician GroupSandusky · 30 sites	Parent on file	120	178	Decision makers
55	Memorial Medical GroupMarysville · 20 sites	Parent on file	113	152	Decision makers
56	Mount Carmel Medical GroupColumbus · 38 sites	Parent on file	110	186	Decision makers
57	Aultman HospitalCanton · 9 sites	Parent on file	107	144	Decision makers
58	Fairfield Healthcare ProfessionalsLancaster · 29 sites	Parent on file	103	164	Decision makers
59	Knox Community HospitalMount Vernon · 19 sites	Parent on file	99	185	Decision makers
60	HNI HealthcareCleveland · 14 sites	Parent on file	95	123	Decision makers
61	Wyandot Memorial HospitalUpper Sandusky · 12 sites	Parent on file	94	136	Decision makers
62	Mercy Health PhysiciansBlue Ash · 15 sites	Parent on file	91	158	Decision makers
63	Kettering Health Cassano Health CenterMiamisburg · 13 sites	Parent on file	88	95	Decision makers
64	South Dayton Acute Care ConsultantsDayton · 8 sites	-	87	127	Decision makers
65	Mercy Health PhysiciansBlue Ash · 24 sites	Parent on file	86	155	Decision makers
66	Samaritan Family CareMoraine · 25 sites	-	85	143	Decision makers
67	Mercy Professional Care PhysiciansCanton · 19 sites	Parent on file	83	159	Decision makers
68	Aultman Orrville HospitalOrrville · 16 sites	Parent on file	80	138	Decision makers
69	Mercy Health Physicians, Defiance ClinicBlue Ash · 13 sites	Parent on file	79	145	Decision makers
70	Trinity Family Care CentersSteubenville · 26 sites	Parent on file	78	151	Decision makers
71	The Christ Hospital Physicians - Heart & VascularCincinnati · 13 sites	Parent on file	77	160	Decision makers
72	Menorah ParkBeachwood · 12 sites	Parent on file	76	87	Decision makers
73	Fisher-Titus Medical CareNorwalk · 21 sites	Parent on file	72	135	Decision makers
74	Bloomington Medical ServicesWooster · 11 sites	Parent on file	69	131	Decision makers
75	Union Physician ServicesIndependence · 19 sites	Parent on file	67	137	Decision makers
76	Pioneer Physicians NetworkUniontown · 20 sites	-	67	106	Decision makers
77	Union HospitalDover · 6 sites	Parent on file	65	97	Decision makers
78	Ohio Gastroenterology Group, Inc.Columbus · 14 sites	-	61	143	Decision makers
79	Cornerstone Physical TherapyGahanna · 14 sites	-	57	82	Decision makers
80	River Valley PhysiciansEast Liverpool · 9 sites	Parent on file	57	82	Decision makers
81	Blanchard Valley Medical PracticesFindlay · 38 sites	Parent on file	56	137	Decision makers
82	Ohio Gastroenterology & Liver Institute (Ohio GI)Cincinnati · 21 sites	Parent on file	56	92	Decision makers
83	Unity Health NetworkCuyahoga Falls · 18 sites	-	56	77	Decision makers
84	Galion Community HospitalGalion · 11 sites	Parent on file	55	103	Decision makers
85	MedOne Hospital PhysiciansColumbus · 2 sites	-	55	66	Decision makers
86	Dayton GastroenterologyDayton · 12 sites	Parent on file	52	98	Decision makers
87	Salem Regional Medical CenterSalem · 14 sites	Parent on file	51	69	Decision makers
88	Cleveland Clinic Indian River HospitalIndependence · 37 sites	Parent on file	47	50	Decision makers
89	Pomerene Medical GroupMillersburg · 16 sites	Parent on file	46	87	Decision makers
90	Physicians Group of Southeastern OhioZanesville · 25 sites	Parent on file	45	87	Decision makers
91	Muskingum Valley Health CentersZanesville · 27 sites	Parent on file	43	157	Decision makers
92	ProMedica Physicians Cardiology - ToledoToledo · 15 sites	Parent on file	43	89	Decision makers
93	Premier PhysiciansWestlake · 21 sites	-	43	57	Decision makers
94	OHC - Oncology Hematology CareCincinnati · 15 sites	-	41	69	Decision makers
95	Aultman Medical Group North Canton Medical Center Internal MedicineNorth Canton · 14 sites	Parent on file	41	64	Decision makers
96	Mercy Health Physicians, LimaBlue Ash · 24 sites	Parent on file	40	97	Decision makers
97	Cleveland ClinicIndependence · 39 sites	Parent on file	37	38	Decision makers
98	Five Rivers Health CentersDayton · 12 sites	Parent on file	36	74	Decision makers
99	Hopewell Grove Rehabilitation & Healthcare CenterChillicothe · 183 sites	Parent on file	35	136	Decision makers
100	Columbus Inpatient CareGrove City · 4 sites	Parent on file	35	56	Decision makers

Showing 51 to 100 of 946 primary care groups in Ohio

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

For sales teams

Find the decision makers at Ohio primary care groups

Dmand AI maps the owners, administrators and physician leaders at each of the 946 Ohio primary care groups, with the parent organization above each one, and finds validated work emails and mobile numbers.

Try for free Book a meeting

Dmand AI

Find the right contacts at every Ohio primary care group

Search 946 groups by size and parent organization, with the physicians and leaders at each one.

Start free trial Book a demo

30 days free
Self-serve
No credit card