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, 801 to 850
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
801	North Shore Eye ConsultantsGlenview · 1 site	-	5	5	Decision makers
802	Ophthalmology Partners, Ltd.Deerfield · 2 sites	-	5	5	Decision makers
803	Pathology Associates of AuroraAurora · 1 site	Parent on file	5	5	Decision makers
804	Pathology Consultants of ChicagoChicago · 1 site	Parent on file	5	5	Decision makers
805	Personal PhysiciansCicero · 2 sites	-	5	5	Decision makers
806	Physicians Vein Clinics (formerly AmeriVein)Aurora · 1 site	-	5	5	Decision makers
807	Retina Vitreous AssociatesOak Lawn · 2 sites	-	5	5	Decision makers
808	Rockford Associated PathologistsRockford · 1 site	Parent on file	5	5	Decision makers
809	The Vein SpecialistsBloomington · 1 site	-	5	5	Decision makers
810	TRE Medical, LTD.Downers Grove · 2 sites	-	5	5	Decision makers
811	USA Vein ClinicsNorthbrook · 6 sites	Parent on file	5	5	Decision makers
812	USA Vein Clinics - Mott HavenNorthbrook · 7 sites	Parent on file	5	5	Decision makers
813	West Central Pathology SpecialistsQuincy · 1 site	Parent on file	5	5	Decision makers
814	Vitae Health SystemsSkokie · 142 sites	Parent on file	4	426	Decision makers
815	Luna Physical TherapyNaperville · 6 sites	Parent on file	4	149	Decision makers
816	Ardent Counseling CenterStreamwood · 8 sites	-	4	76	Decision makers
817	Perspective Behavioral and Pain SolutionsRosemont · 2 sites	Parent on file	4	50	Decision makers
818	Advanced Behavioral Health ServicesNaperville · 2 sites	-	4	44	Decision makers
819	Clarity Clinic Arlington HeightsArlington Heights · 2 sites	-	4	44	Decision makers
820	Trio Health PartnersEvanston · 4 sites	Parent on file	4	41	Decision makers
821	Transitions CarePeoria · 3 sites	Parent on file	4	40	Decision makers
822	Advanced Physicians GroupCrest Hill · 7 sites	-	4	33	Decision makers
823	Valley Ambulatory Surgery CenterSaint Charles · 5 sites	Parent on file	4	31	Decision makers
824	Ascension Alexian Brothers Center for Mental HealthArlington Heights · 2 sites	Parent on file	4	30	Decision makers
825	Glaser & Randhawa Mental Health GroupChicago · 4 sites	-	4	27	Decision makers
826	MiraCare GroupPalos Heights · 4 sites	Parent on file	4	25	Decision makers
827	Aspen CounselingRockford · 3 sites	Parent on file	4	22	Decision makers
828	Hamilton Memorial Family ClinicMc Leansboro · 2 sites	Parent on file	4	22	Decision makers
829	New Southtown Medical GroupDarien · 2 sites	-	4	22	Decision makers
830	Community Health & Emergency Services, Inc. (CHESI)Cairo · 8 sites	Parent on file	4	21	Decision makers
831	Northwest Suburban Medical GroupHoffman Estates · 3 sites	-	4	21	Decision makers
832	Harbor AnesthesiaChicago · 4 sites	Parent on file	4	19	Decision makers
833	Suburban Medical & Wellness CenterSchaumburg · 1 site	-	4	18	Decision makers
834	Whiteside County Community Health ClinicRock Falls · 1 site	Parent on file	4	17	Decision makers
835	MEDS (Midwest Emergency Department Services)O'Fallon · 2 sites	Parent on file	4	15	Decision makers
836	Suburban Medical & Wellness CenterAlgonquin · 2 sites	-	4	15	Decision makers
837	Bloomington Primary CareBloomington · 1 site	-	4	14	Decision makers
838	Decatur Orthopedic CenterMount Zion · 1 site	-	4	14	Decision makers
839	Lightways Hospice and Serious Illness CareJoliet · 1 site	Parent on file	4	14	Decision makers
840	Orthopedic & Sports Enhancement CenterBloomington · 3 sites	-	4	14	Decision makers
841	Whiteside County Health DepartmentRock Falls · 1 site	Parent on file	4	14	Decision makers
842	Lawrence County Memorial HospitalLawrenceville · 1 site	Parent on file	4	13	Decision makers
843	The American Center for Spine and NeurosurgeryLibertyville · 2 sites	Parent on file	4	13	Decision makers
844	Medlux Rehabilitation & WellnessRockford · 8 sites	-	4	12	Decision makers
845	Rehabilitation Associates of the MidwestPalatine · 1 site	-	4	12	Decision makers
846	Advanced Women's HealthcareBloomington · 2 sites	-	4	11	Decision makers
847	Bleeding & Clotting Disorders InstitutePeoria · 2 sites	Parent on file	4	11	Decision makers
848	Evergreen Care CenterEvergreen Park · 1 site	Parent on file	4	11	Decision makers
849	Independence Health & TherapyWoodstock · 2 sites	Parent on file	4	11	Decision makers
850	Midwest Allergy Sinus Respiratory (MASA)Normal · 2 sites	-	4	11	Decision makers

Showing 801 to 850 of 4,250 medical groups in Illinois

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

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