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, 301 to 350
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
301	Clinical RadiologistsSpringfield · 36 sites	-	20	22	Decision makers
302	Illinois Retina AssociatesHarvey · 13 sites	Parent on file	20	20	Decision makers
303	Fox Valley OrthopedicsGeneva · 9 sites	Parent on file	19	83	Decision makers
304	DuPage County Health DepartmentWheaton · 10 sites	Parent on file	19	82	Decision makers
305	Shawnee Health ServiceCarterville · 23 sites	Parent on file	19	66	Decision makers
306	Radial Health GroupChicago · 14 sites	Parent on file	19	53	Decision makers
307	Hartgrove HospitalChicago · 3 sites	Parent on file	19	48	Decision makers
308	Franklin HospitalBenton · 7 sites	Parent on file	19	44	Decision makers
309	Hospitalist Physicians of IllinoisHarvey · 7 sites	-	19	26	Decision makers
310	NANI (Nephrology Associates of Northern Illinois and Indiana)Oak Brook · 8 sites	-	19	26	Decision makers
311	AHS Family Health CenterChicago · 5 sites	Parent on file	19	23	Decision makers
312	Advocate Medical Group Family MedicineChicago · 7 sites	Parent on file	19	21	Decision makers
313	Spectrum Imaging SCChicago · 28 sites	-	19	19	Decision makers
314	University Pathologists, P.C.Chicago · 1 site	-	19	19	Decision makers
315	Christopher Rural Health Planning CorporationChristopher · 21 sites	Parent on file	18	71	Decision makers
316	Marshall Browning HospitalDu Quoin · 2 sites	Parent on file	18	48	Decision makers
317	Premier Anesthesia of Illinois Professional CorporationKankakee · 5 sites	Parent on file	18	47	Decision makers
318	Valley Pain Care Centers, LtdDekalb · 4 sites	-	18	47	Decision makers
319	Will County Community Health CenterJoliet · 5 sites	Parent on file	18	36	Decision makers
320	The New Roseland Community HospitalChicago · 2 sites	Parent on file	18	26	Decision makers
321	Excellent Medical AssociatesOrland Park · 1 site	-	18	23	Decision makers
322	Metro Chicago Surgical OncologyWilmette · 9 sites	-	18	22	Decision makers
323	Radiology and Nuclear ConsultantsPalos Heights · 6 sites	-	18	19	Decision makers
324	Alliance Pathology ConsultantsElk Grove Village · 4 sites	Parent on file	18	18	Decision makers
325	Northwestern Medicine Valley West HospitalSandwich · 2 sites	Parent on file	18	18	Decision makers
326	Derick DermatologyCrystal Lake · 26 sites	-	17	65	Decision makers
327	Alivio Medical CenterChicago · 12 sites	Parent on file	17	51	Decision makers
328	Elite AnesthesiaMokena · 10 sites	Parent on file	17	51	Decision makers
329	Midwest Orthopaedic CenterPeoria · 2 sites	-	17	48	Decision makers
330	Ascension Medical GroupElk Grove Village · 10 sites	Parent on file	17	38	Decision makers
331	AccentCare Medical GroupRosemont · 3 sites	Parent on file	17	32	Decision makers
332	Chicago ENTSkokie · 10 sites	Parent on file	17	29	Decision makers
333	Great Lakes Emergency Physicians Medical GroupChicago · 3 sites	-	17	28	Decision makers
334	Chicago Surgical ClinicArlington Heights · 4 sites	-	17	21	Decision makers
335	Washington County Hospital & Medical GroupNashville · 3 sites	Parent on file	16	36	Decision makers
336	Mugen PsychiatryChicago · 4 sites	-	16	34	Decision makers
337	Rockford Gastroenterology AssociatesRockford · 2 sites	-	16	34	Decision makers
338	Chicago Cardiology InstituteSchaumburg · 2 sites	Parent on file	16	33	Decision makers
339	TCA HealthChicago · 4 sites	Parent on file	16	33	Decision makers
340	Illinois Pain & Spine InstituteElgin · 4 sites	Parent on file	16	28	Decision makers
341	New Lenox Anesthesia LLCNew Lenox · 4 sites	Parent on file	16	27	Decision makers
342	Kare Hospital MedicineHoffman Estates · 3 sites	-	16	22	Decision makers
343	SahagChicago · 2 sites	Parent on file	16	22	Decision makers
344	Advanced Midwest Interventional RadiologyNew Lenox · 4 sites	Parent on file	16	18	Decision makers
345	AIM HospitalistsKankakee · 2 sites	Parent on file	16	18	Decision makers
346	Aspirus Stevens Point HospitalChicago · 19 sites	Parent on file	16	17	Decision makers
347	Pulmonary Medicine AssociatesMelrose Park · 3 sites	Parent on file	16	17	Decision makers
348	DuPage Pathology AssociatesHinsdale · 5 sites	Parent on file	16	16	Decision makers
349	Hoopeston Emergency Medicine SpecialistsBerwyn · 4 sites	-	16	16	Decision makers
350	Naperville Radiologists, S.C.Naperville · 8 sites	-	16	16	Decision makers

Showing 301 to 350 of 4,250 medical groups in Illinois

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

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