Updated October 2026

Largest primary care groups in Illinois

Medical group directory
Illinois
Primary care

Groups: 1,232
Internal Medicine groups: 586
Family Medicine groups: 306
Internal medicine specialists: 7,661
Family physicians: 1,436

There are 1,232 primary care groups in Illinois with a Medicare PAC ID: 586 internal medicine, 306 family medicine, 302 nurse practitioner, 28 physician assistant, 7 general practice and 3 clinical nurse specialist. Northwestern Medical Faculty Foundation is the largest internal medicine group, with 920 internal medicine specialists, and PCC Community Wellness Center the largest family medicine group, with 93 family physicians.

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Northwestern Medical Faculty Foundation is the largest primary care group in Illinois, with 3,118 physicians

Ranked by physicians with an Illinois address linked to each group. Endeavor Health Medical Group is second with 3,048, and Dreyer Medical Clinic (Advocate Medical Group) third with 3,020. 59 Illinois groups have 100 or more physicians.

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Primary care groups in Illinois, ranked by physicians, 101 to 150
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
101	Mason District HospitalHavana · 3 sites	Parent on file	41	60	Decision makers
102	Critical Care Physicians of IllinoisArlington Heights · 12 sites	-	41	48	Decision makers
103	Sound PhysiciansQuincy · 10 sites	Parent on file	41	45	Decision makers
104	UChicago Medicine AdventHealth HinsdaleHinsdale · 5 sites	Parent on file	41	44	Decision makers
105	Memorial Hospital, Carthage, IllinoisCarthage · 13 sites	Parent on file	40	74	Decision makers
106	Affiliated OncologistsOak Lawn · 13 sites	-	39	59	Decision makers
107	KSB HospitalDixon · 3 sites	Parent on file	39	58	Decision makers
108	HSHS Medical GroupSpringfield · 7 sites	Parent on file	39	48	Decision makers
109	St. Bernard HospitalChicago · 5 sites	Parent on file	38	57	Decision makers
110	Vohra Wound PhysiciansArlington Heights · 37 sites	Parent on file	38	48	Decision makers
111	Rush Oak Park Physicians GroupOak Park · 7 sites	Parent on file	38	40	Decision makers
112	The Friedell ClinicChicago · 2 sites	Parent on file	38	38	Decision makers
113	Community PhysiciansOakbrook Terrace · 8 sites	Parent on file	37	87	Decision makers
114	PrimeCare Community HealthChicago · 10 sites	Parent on file	37	86	Decision makers
115	Integritas ProvidersCarbondale · 8 sites	Parent on file	37	64	Decision makers
116	Carle BroMenn Medical CenterNormal · 6 sites	Parent on file	37	57	Decision makers
117	Wabash General HospitalMount Carmel · 12 sites	Parent on file	36	92	Decision makers
118	OSF Saint Anthony Medical CenterPeoria · 14 sites	Parent on file	36	72	Decision makers
119	Hillsboro HealthHillsboro · 4 sites	Parent on file	36	48	Decision makers
120	Heart Care Centers of IllinoisPalos Park · 14 sites	-	35	49	Decision makers
121	Rush Oak Park Physicians Group Adult MedicineOak Park · 5 sites	Parent on file	35	44	Decision makers
122	HSHS Medical GroupSpringfield · 3 sites	Parent on file	34	50	Decision makers
123	Taylorville Memorial HospitalTaylorville · 2 sites	Parent on file	33	69	Decision makers
124	Midwest Cardiovascular InstituteNaperville · 6 sites	-	33	59	Decision makers
125	Midwest Pulmonary, Critical Care, & Sleep ConsultantsPalos Heights · 8 sites	Parent on file	33	49	Decision makers
126	Gateway Regional Medical CenterGranite City · 15 sites	Parent on file	32	73	Decision makers
127	Midwest Cardiovascular InstituteNaperville · 4 sites	-	32	65	Decision makers
128	CIMPAR, S.C.Oak Park · 5 sites	-	32	61	Decision makers
129	Family Christian Health CenterHarvey · 4 sites	Parent on file	32	50	Decision makers
130	Warren G. Murray Developmental CenterCentralia · 18 sites	Parent on file	32	36	Decision makers
131	Boyd Healthcare ServicesCarrollton · 1 site	Parent on file	31	37	Decision makers
132	Memorial HospitalChester · 1 site	Parent on file	30	51	Decision makers
133	Pinckneyville Community HospitalPinckneyville · 1 site	Parent on file	30	51	Decision makers
134	AdventHealth Family Medicine Center La GrangeLagrange · 3 sites	Parent on file	30	32	Decision makers
135	UChicago Medicine AdventHealth Medical Group Hematology & Oncology at HinsdaleHinsdale · 10 sites	Parent on file	29	44	Decision makers
136	RenalCare Associates SCPeoria · 21 sites	-	28	45	Decision makers
137	UChicago Medicine AdventHealth Medical Group Heart and Vascular at La GrangeLagrange · 5 sites	Parent on file	28	30	Decision makers
138	JCH Medical GroupJerseyville · 8 sites	Parent on file	27	65	Decision makers
139	JourneyCareGlenview · 7 sites	Parent on file	27	56	Decision makers
140	Alexian Brothers Medical Group Specialty CareElk Grove Village · 6 sites	Parent on file	27	47	Decision makers
141	Chicago Family Health CenterChicago · 7 sites	Parent on file	26	62	Decision makers
142	Near North HealthChicago · 15 sites	Parent on file	26	55	Decision makers
143	Premier Suburban Medical GroupNew Lenox · 6 sites	Parent on file	26	49	Decision makers
144	Suburban Pulmonary & Sleep AssociatesWestmont · 6 sites	-	26	41	Decision makers
145	Illinois Cancer SpecialistsChicago · 6 sites	-	26	34	Decision makers
146	Northwestern Medicine Delnor HospitalGeneva · 2 sites	Parent on file	26	31	Decision makers
147	MD at HomeChicago · 5 sites	Parent on file	24	117	Decision makers
148	NANI - Nephrology Associates of Northern Illinois & IndianaOak Brook · 30 sites	-	24	33	Decision makers
149	HSHS Medical GroupSpringfield · 7 sites	Parent on file	24	32	Decision makers
150	Aspirus Medical GroupChicago · 41 sites	Parent on file	24	27	Decision makers

Showing 101 to 150 of 1,232 primary care groups in Illinois

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

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