Updated October 2026

Medical groups in Illinois

Medical group directory
Illinois

Medical groups: 4,250
Multi-specialty: 847
Single-specialty: 3,403
More than one site: 1,970
100+ physicians: 73

There are 4,250 medical groups in Illinois with a Medicare PAC ID. Northwestern Medical Faculty Foundation is the largest, with 3,118 Illinois physicians. Northwestern Medicine has the most physicians across its groups, 3,995, and 69% of Illinois groups are independent.

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Northwestern Medical Faculty Foundation is the largest medical 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. 73 Illinois groups have 100 or more physicians.

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Medical groups in Illinois, ranked by physicians, 251 to 300
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
251	Salem Township HospitalSalem · 4 sites	Parent on file	24	51	Decision makers
252	Lawrence County Memorial HospitalLawrenceville · 3 sites	Parent on file	24	46	Decision makers
253	Jacksonville Memorial HospitalJacksonville · 1 site	Parent on file	24	42	Decision makers
254	NANI - Nephrology Associates of Northern Illinois & IndianaOak Brook · 30 sites	-	24	33	Decision makers
255	HSHS Medical GroupSpringfield · 7 sites	Parent on file	24	32	Decision makers
256	Hinsdale Surgical CenterHinsdale · 3 sites	Parent on file	24	31	Decision makers
257	Arbor Centers for EyeCareHomewood · 8 sites	Parent on file	24	29	Decision makers
258	Aspirus Medical GroupChicago · 41 sites	Parent on file	24	27	Decision makers
259	Hospitalist Consultants GroupLisle · 1 site	-	24	25	Decision makers
260	Northwest Radiology AssociatesArlington Heights · 3 sites	-	24	24	Decision makers
261	Midwest Express ClinicWillowbrook · 50 sites	Parent on file	23	413	Decision makers
262	Gottlieb Midwest Anesthesiologists, LLCDeerfield · 10 sites	-	23	69	Decision makers
263	Huntley Anesthesia AssociatesHuntley · 14 sites	-	23	60	Decision makers
264	Community Health Improvement CenterDecatur · 13 sites	Parent on file	23	51	Decision makers
265	HSHS Medical GroupSpringfield · 6 sites	Parent on file	23	36	Decision makers
266	Rochelle Community HospitalRochelle · 1 site	Parent on file	23	36	Decision makers
267	MercyOne Genesis Aledo Medical CenterAledo · 3 sites	Parent on file	23	33	Decision makers
268	Schwab Rehabilitation HospitalChicago · 3 sites	Parent on file	23	27	Decision makers
269	Advanced Midwest RadiologyNew Lenox · 5 sites	Parent on file	23	25	Decision makers
270	Addison-Central PathologyChicago · 4 sites	Parent on file	23	24	Decision makers
271	Illinois CancerCarePeoria · 12 sites	-	22	72	Decision makers
272	HSHS Medical GroupSpringfield · 8 sites	Parent on file	22	52	Decision makers
273	Parkview Orthopaedic GroupPalos Heights · 10 sites	-	22	48	Decision makers
274	VitalSkin DermatologyUrbana · 23 sites	Parent on file	22	43	Decision makers
275	Harrisburg Medical CenterHarrisburg · 6 sites	Parent on file	22	41	Decision makers
276	Roseland Community HospitalChicago · 3 sites	Parent on file	22	37	Decision makers
277	Cancer Care Specialists of ILDecatur · 5 sites	-	22	34	Decision makers
278	Vascular and Interventional ProfessionalsHinsdale · 9 sites	-	22	34	Decision makers
279	WomanCare PCArlington Heights · 12 sites	Parent on file	22	31	Decision makers
280	United Elite HospitalistsPalos Heights · 2 sites	-	22	29	Decision makers
281	Aurora Radiology ConsultantsDekalb · 4 sites	-	22	22	Decision makers
282	UChicago Medicine AdventHealth BolingbrookBolingbrook · 4 sites	Parent on file	22	22	Decision makers
283	Ferrell HospitalEldorado · 12 sites	Parent on file	21	54	Decision makers
284	Lincoln Memorial HospitalLincoln · 1 site	Parent on file	21	47	Decision makers
285	Core DermatologyPeoria · 12 sites	Parent on file	21	36	Decision makers
286	Northwest NeurologyLake Barrington · 3 sites	-	21	33	Decision makers
287	Southern Illinois HealthcareCarbondale · 8 sites	Parent on file	21	33	Decision makers
288	Northwest Oncology & HematologyRolling Meadows · 4 sites	-	21	30	Decision makers
289	Streamwood Behavioral Healthcare SystemStreamwood · 1 site	Parent on file	21	30	Decision makers
290	Warner Hospital & Health ServicesClinton · 1 site	Parent on file	21	27	Decision makers
291	Lincoln Surgical AssociatesShiloh · 4 sites	-	21	26	Decision makers
292	Northern Lake MedicalGurnee · 8 sites	Parent on file	21	22	Decision makers
293	Aurora Radiology ConsultantsAurora · 3 sites	-	21	21	Decision makers
294	University Pathology DiagnosticsChicago · 1 site	Parent on file	21	21	Decision makers
295	Sparta Community HospitalSparta · 10 sites	Parent on file	20	52	Decision makers
296	Guardian Anesthesia AssociatesEast Dundee · 9 sites	-	20	51	Decision makers
297	The Northwestern Specialists for WomenChicago · 4 sites	Parent on file	20	37	Decision makers
298	Saint Anthony Hospital Emergency DepartmentChicago · 3 sites	Parent on file	20	33	Decision makers
299	Hopedale Medical ComplexHoepdale · 1 site	Parent on file	20	31	Decision makers
300	CAM Medical GroupChicago · 4 sites	-	20	24	Decision makers

Showing 251 to 300 of 4,250 medical groups in Illinois

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

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