Largest Nonprofits in Wisconsin

Top nonprofits ranked by total revenue

50 organizations
Year: Latest 2024 2023 2022
# Organization Revenue Assets
1 AURORA HEALTH CARE INC GROUP RETURN
EIN: 611649250 · MILWAUKEE, WI
$7.4B $8.0B
2 Froedtert Memorial Lutheran Hospital Inc
EIN: 396105970 · MILWAUKEE, WI
$2.9B $1.5B
3 THE MEDICAL COLLEGE OF WISCONSIN INC
EIN: 390806261 · Milwaukee, WI
$1.8B $3.5B
4 Gundersen Lutheran Medical Center Inc
EIN: 390813416 · LA CROSSE, WI
$1.6B $2.1B
5 University of Wisconsin Medical Foundation Inc
EIN: 391824445 · Middleton, WI
$1.6B $823.5M
6 MCHS HOSPITALS INC
EIN: 810977948 · MARSHFIELD, WI
$1.5B $910.3M
7 SECURITY HEALTH PLAN OF WISCONSIN INC
EIN: 391572880 · MARSHFIELD, WI
$1.4B $403.6M
8 Froedtert ThedaCare Health Inc
EIN: 392014409 · MILWAUKEE, WI
$1.4B $5.8B
9 Gundersen Lutheran Administrative Services Inc
EIN: 391606449 · LA CROSSE, WI
$1.2B $1.1B
10 Delta Dental of Wisconsin Inc
EIN: 396094742 · Stevens Point, WI
$984.0M $397.5M
11 CHILDREN'S HOSPITAL OF WISCONSIN INC
EIN: 390812532 · MILWAUKEE, WI
$938.0M $2.4B
12 Marquette University
EIN: 390806251 · Milwaukee, WI
$840.0M $2.2B
13 BELLIN MEMORIAL HOSPITAL INC
EIN: 390884478 · GREEN BAY, WI
$834.7M $1.1B
14 COMMUNITY CARE INC
EIN: 391264667 · BROOKFIELD, WI
$807.6M $274.7M
15 ASPIRUS WAUSAU HOSPITAL INC
EIN: 391138241 · WAUSAU, WI
$792.0M $410.8M
16 St Vincent Hospital of the Hospital Sisters of the Third Order of St Franci s
EIN: 390817529 · Green Bay, WI
$739.7M $918.9M
17 Mercy Health System Corporation
EIN: 390816848 · JANESVILLE, WI
$685.9M $870.4M
18 UNIVERSITY OF WISCONSIN FOUNDATION
EIN: 390743975 · MADISON, WI
$680.9M $6.3B
19 PROHEALTH WAUKESHA MEMORIAL HOSPITAL INC
EIN: 390910727 · WAUKESHA, WI
$662.0M $616.0M
20 MARSHFIELD CLINIC INC
EIN: 390452970 · MARSHFIELD, WI
$633.6M $800.0M
21 MERITER HOSPITAL INC
EIN: 390806367 · MADISON, WI
$625.7M $991.6M
22 USB WELFARE BENEFIT PLAN
EIN: 411849855 · MILWAUKEE, WI
$532.1M $0
23 AGNESIAN HEALTHCARE INC
EIN: 390807236 · FOND DU LAC, WI
$521.5M $689.1M
24 GROUP HEALTH COOPERATIVE OF SOUTH CENTRAL WI
EIN: 391199466 · MADISON, WI
$518.1M $151.0M
25 COLUMBIA ST MARY'S HOSPITAL MILWAUKEE INC
EIN: 390806315 · GLENDALE, WI
$504.0M $624.7M
26 FROEDTERT SOUTH INC
EIN: 390816845 · KENOSHA, WI
$486.9M $727.8M
27 DAIRYLAND POWER COOPERATIVE
EIN: 390233059 · La Crosse, WI
$485.8M $1.6B
28 CHORUS COMMUNITY HEALTH PLANS INC
EIN: 271494977 · MILWAUKEE, WI
$473.6M $268.8M
29 COMMON GROUND HEALTHCARE COOPERATIVE
EIN: 453309488 · BROOKFIELD, WI
$459.4M $262.1M
30 INCLUSA FOUNDATION INC
EIN: 813565570 · STEVENS POINT, WI
$439.0M $209.5M
31 ThedaCare Inc
EIN: 391509362 · Appleton, WI
$432.6M $1.5B
32 QUARTZ HEALTH PLAN CORPORATION
EIN: 391807071 · FITCHBURG, WI
$431.5M $113.5M
33 ASCENSION SE WISCONSIN HOSPITAL INC
EIN: 390816857 · MILWAUKEE, WI
$431.4M $314.6M
34 Froedtert & The Medical College of Wisconsin Community Physicians Inc
EIN: 272042610 · MENOMONEE FALLS, WI
$431.0M $154.8M
35 LAKELAND CARE INCORPORATED
EIN: 813724993 · FOND DU LAC, WI
$407.8M $76.4M
36 ASCENSION ALL SAINTS HOSPITAL INC
EIN: 391264986 · RACINE, WI
$372.7M $302.0M
37 UNIVERSITY OF WISCONSIN CREDIT UNION
EIN: 390671465 · MADISON, WI
$363.8M $5.7B
38 LANDMARK CREDIT UNION
EIN: 390203995 · BROOKFIELD, WI
$356.4M $6.4B
39 MARSHFIELD CLINIC HEALTH SYSTEM INC
EIN: 461495343 · MARSHFIELD, WI
$354.5M $711.3M
40 COMMUNITY FIRST CREDIT UNION
EIN: 396264347 · APPLETON, WI
$353.7M $6.4B
41 CONNEXUS CREDIT UNION
EIN: 390263945 · WAUSAU, WI
$349.1M $4.3B
42 ROGERS MEMORIAL HOSPITAL INC
EIN: 391139101 · OCONOMOWOC, WI
$346.8M $647.8M
43 SUMMIT CREDIT UNION
EIN: 390230585 · MADISON, WI
$344.6M $6.9B
44 WISCONSIN COUNTIES ASSOCIATION GROUP HEALTH TRUST
EIN: 391692308 · MADISON, WI
$331.4M $139.6M
45 ThedaCare Regional Medical Center - Neenah Inc
EIN: 390830664 · Appleton, WI
$331.4M $737.0M
46 UNITED STUDENT AID FUNDS INC
EIN: 946050341 · Madison, WI
$330.1M $0
47 ASCENSION NE WISCONSIN INC
EIN: 390816818 · APPLETON, WI
$323.5M $318.1M
48 CHILDREN'S HOSPITAL AND HEALTH SYSTEM INC
EIN: 391500074 · MILWAUKEE, WI
$304.5M $158.2M
49 ROYAL CREDIT UNION
EIN: 396072970 · EAU CLAIRE, WI
$300.0M $5.2B
50 Ascendium Education Solutions Inc
EIN: 391853833 · MADISON, WI
$298.2M $351.5M
Data from IRS Form 990 filings. Click an organization name to view full details. © 2026 990 Finder by Trantor SpA.