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, 101 to 150
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
101	Associated AnesthesiologistsPeoria · 38 sites	Parent on file	68	211	Decision makers
102	Sarah D. Culbertson Memorial HospitalRushville · 3 sites	Parent on file	68	89	Decision makers
103	Prairie CardiovascularSpringfield · 32 sites	Parent on file	67	118	Decision makers
104	OSF Saint Francis Medical CenterPeoria · 15 sites	Parent on file	66	160	Decision makers
105	McDonough District HospitalMacomb · 8 sites	Parent on file	66	134	Decision makers
106	Esperanza Health CentersChicago · 14 sites	Parent on file	66	129	Decision makers
107	Friend HealthChicago · 12 sites	Parent on file	66	121	Decision makers
108	Midwest Orthopaedics at RushWestchester · 17 sites	Parent on file	65	232	Decision makers
109	Gibson Area Hospital & Health ServicesGibson City · 30 sites	Parent on file	60	159	Decision makers
110	OSF Saint Elizabeth Medical CenterPeoria · 9 sites	Parent on file	60	130	Decision makers
111	Rush Copley Medical CenterAurora · 8 sites	Parent on file	60	81	Decision makers
112	University Anesthesiologists, S.C.Chicago · 11 sites	Parent on file	59	156	Decision makers
113	Midwest Anesthesiologists, Ltd.East Dundee · 10 sites	-	59	85	Decision makers
114	MacNeal HospitalBerwyn · 3 sites	Parent on file	59	81	Decision makers
115	Physicians Immediate CareChicago · 86 sites	Parent on file	57	491	Decision makers
116	Pana Community HospitalPana · 8 sites	Parent on file	57	96	Decision makers
117	American Anesthesiology Associates of IllinoisMokena · 25 sites	Parent on file	56	172	Decision makers
118	Anderson Medical GroupMaryville · 34 sites	Parent on file	56	129	Decision makers
119	Illinois Emergency Medicine SpecialistsUrbana · 7 sites	Parent on file	56	80	Decision makers
120	Midwest Emergency Department Services (MEDS)O'Fallon · 16 sites	Parent on file	55	97	Decision makers
121	Linden Oaks HospitalNaperville · 4 sites	Parent on file	55	57	Decision makers
122	Shirley Ryan AbilityLabChicago · 4 sites	Parent on file	54	62	Decision makers
123	VNA Health CareAurora · 6 sites	Parent on file	53	110	Decision makers
124	OSF Saint Francis Medical CenterPeoria · 11 sites	Parent on file	53	108	Decision makers
125	HSHS St. Anthony's Memorial HospitalSpringfield · 11 sites	Parent on file	53	88	Decision makers
126	GI Partners of IllinoisLibertyville · 15 sites	-	53	80	Decision makers
127	Midwest Diagnostic PathologyPark Ridge · 12 sites	Parent on file	53	55	Decision makers
128	Associates in NephrologyChicago · 92 sites	-	52	59	Decision makers
129	Howard Brown HealthChicago · 16 sites	Parent on file	51	153	Decision makers
130	OSF Medical Group, MendotaPeoria · 12 sites	Parent on file	51	102	Decision makers
131	Crawford Memorial HospitalRobinson · 8 sites	Parent on file	51	81	Decision makers
132	Central DuPage Hospital Emergency PhysiciansWinfield · 13 sites	-	51	79	Decision makers
133	HSHS Medical GroupSpringfield · 2 sites	Parent on file	51	59	Decision makers
134	Little Company of Mary Oak Lawn Care StationOak Lawn · 9 sites	Parent on file	51	58	Decision makers
135	Lake County Health Department and Community Health CenterWaukegan · 20 sites	Parent on file	50	147	Decision makers
136	Iroquois Memorial HospitalWatseka · 6 sites	Parent on file	50	64	Decision makers
137	Thorek Memorial HospitalChicago · 7 sites	Parent on file	50	64	Decision makers
138	DuPage Emergency PhysiciansLemont · 7 sites	-	50	63	Decision makers
139	St. Bernard Hospital Anesthesia DepartmentChicago · 10 sites	Parent on file	50	60	Decision makers
140	Chicago Health Medical GroupChicago · 6 sites	Parent on file	50	59	Decision makers
141	MEDS (Midwest Emergency Department Services)O'Fallon · 7 sites	Parent on file	49	92	Decision makers
142	Southeastern Emergency Physicians of Memphis LLCAlton · 36 sites	-	49	66	Decision makers
143	Ambulatory Anesthesia CareRosemont · 12 sites	Parent on file	49	49	Decision makers
144	Midwest ENT AllianceOrland Park · 12 sites	-	48	100	Decision makers
145	Loretto HospitalChicago · 4 sites	Parent on file	47	56	Decision makers
146	West Central Anesthesiology GroupRosemont · 6 sites	Parent on file	47	56	Decision makers
147	Advance Inpatient MedicineOak Brook · 5 sites	Parent on file	46	56	Decision makers
148	Eye Center PhysiciansChicago · 9 sites	Parent on file	46	46	Decision makers
149	Horizon HealthParis · 17 sites	Parent on file	45	133	Decision makers
150	Pinnacle DermatologyJoliet · 99 sites	Parent on file	45	121	Decision makers

Showing 101 to 150 of 4,250 medical groups in Illinois

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

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