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, 901 to 950
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
901	S&T Medical Group Behavioral Health DivisionHoffman Estates · 1 site	-	4	6	Decision makers
902	Spectrum Eye InstituteJoliet · 1 site	-	4	6	Decision makers
903	Success TMSGlenview · 4 sites	Parent on file	4	6	Decision makers
904	Central Illinois DermatologyPeoria · 1 site	-	4	5	Decision makers
905	Chicago GastroChicago · 1 site	-	4	5	Decision makers
906	Chicago Glaucoma Consultants, CGC Eye CenterGlenview · 1 site	-	4	5	Decision makers
907	Diabetes & Endocrine CareEvergreen Park · 2 sites	Parent on file	4	5	Decision makers
908	Filam Medical Group IncSkokie · 1 site	-	4	5	Decision makers
909	Fox Valley Urgent CareAurora · 1 site	Parent on file	4	5	Decision makers
910	Hinsdale Eye CenterHinsdale · 1 site	-	4	5	Decision makers
911	Illinois Veterans' Home at MantenoManteno · 1 site	Parent on file	4	5	Decision makers
912	Kidney Care CenterRockford · 1 site	-	4	5	Decision makers
913	Kidney Specialists Of IllinoisChicago · 2 sites	Parent on file	4	5	Decision makers
914	Lake Barrington Women's Health CenterLake Barrington · 3 sites	-	4	5	Decision makers
915	Lakeside NephrologyChicago · 4 sites	-	4	5	Decision makers
916	Mack Eye CenterHoffman Estates · 2 sites	-	4	5	Decision makers
917	NANI - Nephrology Associates of Northern Illinois & IndianaOak Brook · 4 sites	-	4	5	Decision makers
918	North Central Behavioral Health SystemsLa Salle · 1 site	Parent on file	4	5	Decision makers
919	North Shore Medical AssociatesBannockburn · 1 site	-	4	5	Decision makers
920	Northwest Healthcare LTDChicago · 1 site	-	4	5	Decision makers
921	Premier Health Consultants IncHoffman Estates · 2 sites	-	4	5	Decision makers
922	RL Center for Cosmetic Surgery & MedspaVernon Hills · 2 sites	-	4	5	Decision makers
923	Southwest Medical ConsultantsOak Lawn · 4 sites	Parent on file	4	5	Decision makers
924	Southwest Urgent CareEvergreen Park · 1 site	Parent on file	4	5	Decision makers
925	Allergy and Asthma AssociatesNorthbrook · 3 sites	-	4	4	Decision makers
926	Associate Pathologists of JolietJoliet · 1 site	Parent on file	4	4	Decision makers
927	Chicago Portable X-RayMorton Grove · 2 sites	Parent on file	4	4	Decision makers
928	Chicago Skin ClinicChicago · 1 site	-	4	4	Decision makers
929	Chicago Vascular ClinicSchaumburg · 2 sites	Parent on file	4	4	Decision makers
930	Consultants In Clinical PathologyEvergreen Park · 1 site	Parent on file	4	4	Decision makers
931	Diaspora RadiologyNorthbrook · 2 sites	-	4	4	Decision makers
932	DuPage Immediate CareOakbrook Terrace · 1 site	Parent on file	4	4	Decision makers
933	Fox Valley Radiation OncologyNaperville · 2 sites	-	4	4	Decision makers
934	Gastroenterology Services, LtdDowners Grove · 1 site	-	4	4	Decision makers
935	Gottlieb Memorial HospitalMelrose Park · 1 site	Parent on file	4	4	Decision makers
936	Hoffman-Barrington Internal Medicine Specialists, SCHoffman Estates · 1 site	Parent on file	4	4	Decision makers
937	Home Visiting PhysiciansArlington Heights · 1 site	Parent on file	4	4	Decision makers
938	Internal Medicine and Family PracticeJoliet · 1 site	-	4	4	Decision makers
939	Jesse Imaging Center & Gale Keeran Center for WomenNormal · 4 sites	Parent on file	4	4	Decision makers
940	Medical Diagnostic ServicesSkokie · 6 sites	Parent on file	4	4	Decision makers
941	Medical Eye Services, Ltd.Gurnee · 3 sites	-	4	4	Decision makers
942	Midtown Gastroenterology and Liver DiseaseDes Plaines · 1 site	-	4	4	Decision makers
943	Midtown PhysiciansBerwyn · 8 sites	-	4	4	Decision makers
944	Naperville Eye AssociatesNaperville · 1 site	-	4	4	Decision makers
945	North Shore Pathology Consultants, S.C.Evanston · 2 sites	-	4	4	Decision makers
946	Northeast Nephrology ConsultantsJoliet · 1 site	-	4	4	Decision makers
947	Northwest Medical Associates of ChicagoChicago · 1 site	Parent on file	4	4	Decision makers
948	Northwestern Surgical AssociatesChicago · 1 site	-	4	4	Decision makers
949	Orchard Medical CenterAntioch · 1 site	Parent on file	4	4	Decision makers
950	Pathology Associates of Central Illinois (PACI)Oak Brook · 1 site	-	4	4	Decision makers

Showing 901 to 950 of 4,250 medical groups in Illinois

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

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