Updated October 2026

Largest primary care groups in Wisconsin

Medical group directory
Wisconsin
Primary care

Groups: 234
Internal Medicine groups: 112
Family Medicine groups: 64
Internal medicine specialists: 3,125
Family physicians: 675

There are 234 primary care groups in Wisconsin with a Medicare PAC ID: 112 internal medicine, 64 family medicine, 52 nurse practitioner and 4 physician assistant. Aurora Medical Group is the largest internal medicine group, with 578 internal medicine specialists, and Lakeshore Medical Clinic the largest family medicine group, with 125 family physicians.

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Aurora Medical Group is the largest primary care group in Wisconsin, with 2,410 physicians

Ranked by physicians with a Wisconsin address linked to each group. Froedtert & the Medical College of Wisconsin Community Physicians is second with 2,131, and UW Health third with 2,054. 44 Wisconsin groups have 100 or more physicians.

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Primary care groups in Wisconsin, ranked by physicians, 51 to 100
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
51	Access Community Health CentersMadison · 15 sites	Parent on file	77	148	Decision makers
52	Sauk Prairie HealthcarePrairie Du Sac · 8 sites	Parent on file	70	158	Decision makers
53	Madison Medical AffiliatesMilwaukee · 15 sites	-	69	99	Decision makers
54	Stoughton HealthStoughton · 6 sites	Parent on file	60	143	Decision makers
55	Wisconsin Health FundMilwaukee · 10 sites	-	55	63	Decision makers
56	Hudson PhysiciansHudson · 11 sites	-	53	78	Decision makers
57	Oak MedicalWaukesha · 33 sites	Parent on file	51	180	Decision makers
58	Essentia Health St. Mary's Hospital-SuperiorSuperior · 12 sites	Parent on file	50	140	Decision makers
59	Apogee Medical Group Waukesha, SCWaukesha · 7 sites	Parent on file	50	63	Decision makers
60	Gundersen La Crosse ClinicLa Crosse · 5 sites	Parent on file	44	60	Decision makers
61	OakLeaf ClinicsEau Claire · 20 sites	-	43	119	Decision makers
62	Tamarack Health Hayward Medical CenterHayward · 3 sites	Parent on file	39	81	Decision makers
63	Osceola Medical CenterOsceola · 4 sites	Parent on file	38	91	Decision makers
64	GI AssociatesMilwaukee · 15 sites	Parent on file	38	63	Decision makers
65	Oak Medical, SCWaukesha · 8 sites	Parent on file	37	129	Decision makers
66	Milwaukee Family Medical ClinicMilwaukee · 22 sites	-	34	51	Decision makers
67	SSM Health St. Mary's Hospital - MadisonMadison · 4 sites	Parent on file	32	51	Decision makers
68	Milwaukee Health Services, Inc.Milwaukee · 8 sites	Parent on file	30	84	Decision makers
69	Spooner HealthSpooner · 3 sites	Parent on file	30	47	Decision makers
70	Grant Regional Health CenterLancaster · 5 sites	Parent on file	26	64	Decision makers
71	Primary Care Associates of AppletonAppleton · 2 sites	-	26	34	Decision makers
72	Midwest Critical CareMount Pleasant · 12 sites	Parent on file	24	67	Decision makers
73	HSHS St. Mary's Hospital Medical CenterGreen Bay · 4 sites	Parent on file	24	48	Decision makers
74	GI AssociatesMilwaukee · 9 sites	Parent on file	24	40	Decision makers
75	Mosaic Family Care Medical GroupAppleton · 2 sites	-	23	25	Decision makers
76	Prairie ClinicPrairie Du Sac · 4 sites	Parent on file	18	38	Decision makers
77	Burnett Medical CenterGrantburg · 2 sites	Parent on file	18	36	Decision makers
78	Midwest Nephrology AssociatesOak Creek · 25 sites	-	18	33	Decision makers
79	GI AssociatesMilwaukee · 2 sites	Parent on file	18	23	Decision makers
80	Aurora West Allis Medical CenterWest Allis · 1 site	Parent on file	17	25	Decision makers
81	Milwaukee Nephrologists, S.C.Milwaukee · 4 sites	-	17	24	Decision makers
82	Wildwood Family ClinicCottage Grove · 3 sites	-	16	31	Decision makers
83	GI AssociatesMilwaukee · 3 sites	-	16	18	Decision makers
84	Cumberland Healthcare (Cumberland Memorial Hospital)Cumberland · 5 sites	Parent on file	14	38	Decision makers
85	Heart and Vascular Institute of WisconsinAppleton · 3 sites	-	14	26	Decision makers
86	Krohn ClinicBlack River Falls · 1 site	Parent on file	14	19	Decision makers
87	Greater Milwaukee Critical Care and Pulmonary Associates SCMilwaukee · 3 sites	-	12	22	Decision makers
88	inFORME HealthcareMilwaukee · 5 sites	Parent on file	12	18	Decision makers
89	Kenosha Medical GroupKenosha · 7 sites	-	12	18	Decision makers
90	AgraceMadison · 4 sites	Parent on file	9	30	Decision makers
91	Fox Valley Pulmonary MedicineNeenah · 5 sites	-	9	23	Decision makers
92	Kaukauna ClinicKaukauna · 2 sites	-	9	14	Decision makers
93	Rheumatic Disease CenterGlendale · 1 site	-	9	11	Decision makers
94	St. Gianna ClinicDe Pere · 1 site	-	9	10	Decision makers
95	Sheboygan Internal Medicine AssociatesSheboygan · 5 sites	-	8	21	Decision makers
96	CVS MinuteClinicMilwaukee · 3 sites	Parent on file	8	18	Decision makers
97	Beam HealthcareMadison · 5 sites	Parent on file	8	11	Decision makers
98	Geiger MedicalBrookfield · 6 sites	-	7	33	Decision makers
99	Urgent Care PhysiciansAppleton · 2 sites	-	7	18	Decision makers
100	Fox Valley Nephrology PartnersNeenah · 4 sites	-	7	17	Decision makers

Showing 51 to 100 of 234 primary care groups in Wisconsin

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

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