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, 151 to 200
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
151	Hospitalist Consultants GroupLisle · 1 site	-	24	25	Decision makers
152	Midwest Express ClinicWillowbrook · 50 sites	Parent on file	23	413	Decision makers
153	HSHS Medical GroupSpringfield · 6 sites	Parent on file	23	36	Decision makers
154	MercyOne Genesis Aledo Medical CenterAledo · 3 sites	Parent on file	23	33	Decision makers
155	Illinois CancerCarePeoria · 12 sites	-	22	72	Decision makers
156	HSHS Medical GroupSpringfield · 8 sites	Parent on file	22	52	Decision makers
157	Cancer Care Specialists of ILDecatur · 5 sites	-	22	34	Decision makers
158	United Elite HospitalistsPalos Heights · 2 sites	-	22	29	Decision makers
159	UChicago Medicine AdventHealth BolingbrookBolingbrook · 4 sites	Parent on file	22	22	Decision makers
160	Ferrell HospitalEldorado · 12 sites	Parent on file	21	54	Decision makers
161	Southern Illinois HealthcareCarbondale · 8 sites	Parent on file	21	33	Decision makers
162	Northwest Oncology & HematologyRolling Meadows · 4 sites	-	21	30	Decision makers
163	Warner Hospital & Health ServicesClinton · 1 site	Parent on file	21	27	Decision makers
164	Sparta Community HospitalSparta · 10 sites	Parent on file	20	52	Decision makers
165	CAM Medical GroupChicago · 4 sites	-	20	24	Decision makers
166	Franklin HospitalBenton · 7 sites	Parent on file	19	44	Decision makers
167	Hospitalist Physicians of IllinoisHarvey · 7 sites	-	19	26	Decision makers
168	NANI (Nephrology Associates of Northern Illinois and Indiana)Oak Brook · 8 sites	-	19	26	Decision makers
169	AHS Family Health CenterChicago · 5 sites	Parent on file	19	23	Decision makers
170	Advocate Medical Group Family MedicineChicago · 7 sites	Parent on file	19	21	Decision makers
171	Christopher Rural Health Planning CorporationChristopher · 21 sites	Parent on file	18	71	Decision makers
172	Marshall Browning HospitalDu Quoin · 2 sites	Parent on file	18	48	Decision makers
173	Excellent Medical AssociatesOrland Park · 1 site	-	18	23	Decision makers
174	Ascension Medical GroupElk Grove Village · 10 sites	Parent on file	17	38	Decision makers
175	AccentCare Medical GroupRosemont · 3 sites	Parent on file	17	32	Decision makers
176	Washington County Hospital & Medical GroupNashville · 3 sites	Parent on file	16	36	Decision makers
177	Rockford Gastroenterology AssociatesRockford · 2 sites	-	16	34	Decision makers
178	Chicago Cardiology InstituteSchaumburg · 2 sites	Parent on file	16	33	Decision makers
179	Kare Hospital MedicineHoffman Estates · 3 sites	-	16	22	Decision makers
180	AIM HospitalistsKankakee · 2 sites	Parent on file	16	18	Decision makers
181	Aspirus Stevens Point HospitalChicago · 19 sites	Parent on file	16	17	Decision makers
182	Pulmonary Medicine AssociatesMelrose Park · 3 sites	Parent on file	16	17	Decision makers
183	Innovative CareChicago · 7 sites	-	15	60	Decision makers
184	OSF Saint Luke Medical CenterKewanee · 1 site	Parent on file	15	26	Decision makers
185	First DocsNaperville · 90 sites	Parent on file	14	28	Decision makers
186	Midwest Digestive Health & NutritionDes Plaines · 4 sites	-	14	26	Decision makers
187	Midwest Respiratory Ltd.Joliet · 8 sites	-	14	25	Decision makers
188	Suburban Gastroenterology, Ltd.Naperville · 3 sites	-	14	25	Decision makers
189	Consultants in Cardiology & ElectrophysiologyEvergreen Park · 2 sites	-	14	24	Decision makers
190	Medical Arts AssociatesMoline · 2 sites	-	14	21	Decision makers
191	Rockford Nephrology AssociatesRockford · 7 sites	-	14	21	Decision makers
192	Suburban Lung AssociatesElk Grove Village · 4 sites	-	14	15	Decision makers
193	Community Health Partnership of Illinois (CHP)Chicago · 11 sites	Parent on file	13	38	Decision makers
194	Advanced Inpatient Consultants LLCVernon Hills · 3 sites	-	13	26	Decision makers
195	Family Medical Center-LincolnLincoln · 3 sites	Parent on file	13	20	Decision makers
196	Digestive Disease Consultants of KankakeeBourbonnais · 3 sites	-	13	17	Decision makers
197	HSHS Medical GroupSpringfield · 3 sites	Parent on file	13	15	Decision makers
198	Trinity Medical Staffing LLCCarbondale · 9 sites	Parent on file	12	53	Decision makers
199	Metropolitan Healthcare PartnersChicago · 7 sites	-	12	32	Decision makers
200	The Illinois Center for Digestive and Liver HealthBarrington · 6 sites	-	12	23	Decision makers

Showing 151 to 200 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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