Skip to content
Nonprofiteer
← All organizations

GROUP HEALTH COOPERATIVE OF SOUTH CENTRAL WI

EIN 39-1199466 MADISON, WI

Browse the largest nonprofits in Wisconsin

Revenue 2024
$518,144,018
Expenses 2024
$503,382,472

Program services were 94.2% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
E310
Classification
1000
Street
PO BOX 44971

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

MISSION: WE PARTNER WITH MEMBERS AND THE COMMUNITIES WE SERVE TO MAXIMIZE HEALTH AND WELL-BEING. (CONTINUED ON SCHEDULE O)

Activities or mission (Part I)

WE PARTNER WITH MEMBERS AND THE COMMUNITIES WE SERVE TO MAXIMIZE HEALTH AND WELL-BEING.

  • GROUP HEALTH COOPERATIVE OF SOUTH CENTRAL WISCONSIN (GHC) CONTRACTS WITH BUSINESS ORGANIZATIONS AND INDIVIDUALS IN THE STATE OF WISCONSIN TO PROVIDE COMPREHENSIVE MEDICAL CARE BENEFITS IN EXCHANGE FOR PREPAID PREMIUMS. SERVICES AS DEFINED BY THE SECRETARY OF THE U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES ARE PROVIDED TO SUBSCRIBERS AS NEEDED, AND GENERALLY WITHOUT LIMITATION AS TO TIME AND COST. GHC IS A STAFF-MODEL HMO, WHEREBY THE CLINIC-BASED PHYSICIANS ARE EMPLOYEES OF AND WORK EXCLUSIVELY FOR GHC. GHC OPERATES SIX CLINICS IN THE MADISON METROPOLITAN AREA. GHC'S ENROLLMENT AS OF DECEMBER 31, 2024 WAS 73,182. IN ADDITION TO PROVIDING HMO BENEFITS AND DAILY PATIENT CARE, GHC S MISSION IS TO CONTRIBUTE TO AND AID COMMUNITY ORGANIZATIONS, PERFORM GOOD DEEDS AND TO MAKE DANE COUNTY A BETTER PLACE TO LIVE. AS OF DECEMBER 31, 2024, THE DEFOREST CLINIC WAS NO LONGER IN OPERATION AND LISTED FOR SALE.

    Expenses $474,267,707 · Grants $358,968 · Revenue $513,982,076

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Kristopher Denby MD

    CHIEF DERMATOLOGIST;BOARD MEMBER

    Total calculated
    $546,929
    From this org
    $497,142
    From related orgs
    $0
    Other
    $49,787
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $473,842
    Bonus
    $0
    Other
    $23,300
    Deferred
    $19,837
    Nontaxable benefits
    $29,950
    Filer's total
    $546,929

  • Nathan Hayes MD

    PHYSICIAN;BOARD MEMBER (THRU 5/2024)

    Total calculated
    $311,934
    From this org
    $266,538
    From related orgs
    $0
    Other
    $45,396
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $265,538
    Bonus
    $700
    Other
    $300
    Deferred
    $15,446
    Nontaxable benefits
    $29,950
    Filer's total
    $311,934

  • Allison Philipps Apnp

    APNP;BOARD MEMBER (THRU 3/2024)

    Total calculated
    $32,452
    From this org
    $32,452
    From related orgs
    $0
    Other
    $0
    Hours/week
    40

  • Ann Hoyt

    PRESIDENT

    Total calculated
    $30,000
    From this org
    $30,000
    From related orgs
    $0
    Other
    $0
    Hours/week
    5

  • Nannette Schiller Hensen

    BOARD MEMBER

    Total calculated
    $10,328
    From this org
    $10,328
    From related orgs
    $0
    Other
    $0
    Hours/week
    5

  • Colleen Gullickson

    VICE-PRESIDENT

    Total calculated
    $9,563
    From this org
    $9,563
    From related orgs
    $0
    Other
    $0
    Hours/week
    5

  • William Oemichen

    TREASURER (THRU 6/2024)

    Total calculated
    $20,833
    From this org
    $20,833
    From related orgs
    $0
    Other
    $0
    Hours/week
    4

  • Courtney S Hayward

    BOARD MEMBER

    Total calculated
    $9,180
    From this org
    $9,180
    From related orgs
    $0
    Other
    $0
    Hours/week
    4

  • Judy Ziewacz

    SECRETARY (AS OF 7/2024)

    Total calculated
    $7,650
    From this org
    $7,650
    From related orgs
    $0
    Other
    $0
    Hours/week
    4

  • Andrew Turner

    TREASURER (AS OF 6/2024)

    Total calculated
    $11,052
    From this org
    $11,052
    From related orgs
    $0
    Other
    $0
    Hours/week
    4

  • Richard Lavigne

    BOARD MEMBER (THRU 11/2024)

    Total calculated
    $4,973
    From this org
    $4,973
    From related orgs
    $0
    Other
    $0
    Hours/week
    4

  • Chassiti Clark

    BOARD MEMBER

    Total calculated
    $9,180
    From this org
    $9,180
    From related orgs
    $0
    Other
    $0
    Hours/week
    4

  • Dimitri Yatsenko

    BOARD MEMBER (AS OF 6/2024)

    Total calculated
    $2,295
    From this org
    $2,295
    From related orgs
    $0
    Other
    $0
    Hours/week
    4

  • Ross Putman

    BOARD MEMBER (AS OF 11/2024)

    Total calculated
    $0
    Hours/week
    4

  • Paul Jones

    PT;BOARD MEMBER (AS OF 7/2024)

    Total calculated
    $119,052
    From this org
    $86,562
    From related orgs
    $0
    Other
    $32,490
    Hours/week
    40

  • Mark Huth

    CHIEF EXECUTIVE OFFICER

    Total calculated
    $701,216
    From this org
    $640,640
    From related orgs
    $0
    Other
    $60,576
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $531,933
    Bonus
    $70,856
    Other
    $37,851
    Deferred
    $22,200
    Nontaxable benefits
    $38,376
    Filer's total
    $701,216

  • Christian Kastman MD

    CHIEF MEDICAL OFFICER

    Total calculated
    $571,430
    From this org
    $517,756
    From related orgs
    $0
    Other
    $53,674
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $427,042
    Bonus
    $55,585
    Other
    $35,129
    Deferred
    $20,163
    Nontaxable benefits
    $33,511
    Filer's total
    $571,430

  • Bruce Quade

    CHIEF FINANCIAL OFFICER

    Total calculated
    $485,320
    From this org
    $432,593
    From related orgs
    $0
    Other
    $52,727
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $330,400
    Bonus
    $47,935
    Other
    $54,258
    Deferred
    $20,700
    Nontaxable benefits
    $32,027
    Filer's total
    $485,320

  • Marty Anderson

    CHIEF STRATEGY & BUS DEV

    Total calculated
    $383,905
    From this org
    $339,046
    From related orgs
    $0
    Other
    $44,859
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $291,204
    Bonus
    $37,883
    Other
    $9,959
    Deferred
    $18,025
    Nontaxable benefits
    $26,834
    Filer's total
    $383,905

  • Carrie O'Dell

    CHIEF HUMAN RESOURCES OFFICER

    Total calculated
    $280,631
    From this org
    $245,845
    From related orgs
    $0
    Other
    $34,786
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $214,496
    Bonus
    $26,497
    Other
    $4,852
    Deferred
    $13,197
    Nontaxable benefits
    $21,589
    Filer's total
    $280,631

  • Carol Meyer

    CHIEF COMPLIANCE OFFICER

    Total calculated
    $269,024
    From this org
    $255,268
    From related orgs
    $0
    Other
    $13,756
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $215,520
    Bonus
    $27,548
    Other
    $12,200
    Deferred
    $11,664
    Nontaxable benefits
    $2,092
    Filer's total
    $269,024

  • Annette Fox

    CHIEF INFORMATION OFFICER

    Total calculated
    $329,679
    From this org
    $292,745
    From related orgs
    $0
    Other
    $36,934
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $255,284
    Bonus
    $32,083
    Other
    $5,378
    Deferred
    $5,531
    Nontaxable benefits
    $31,403
    Filer's total
    $329,679

  • Sally Frings

    CHIEF NURSING OFFICER

    Total calculated
    $295,251
    From this org
    $247,939
    From related orgs
    $0
    Other
    $47,312
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $216,703
    Bonus
    $26,388
    Other
    $4,848
    Deferred
    $15,803
    Nontaxable benefits
    $31,509
    Filer's total
    $295,251

  • Alison Craig- Shasko MD

    CHIEF OF STAFF

    Total calculated
    $385,771
    From this org
    $335,353
    From related orgs
    $0
    Other
    $50,418
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $333,663
    Bonus
    $1,000
    Other
    $690
    Deferred
    $20,468
    Nontaxable benefits
    $29,950
    Filer's total
    $385,771

  • Carleen Oakley MD

    MED DIR - BEHAV HLTH

    Total calculated
    $362,220
    From this org
    $340,389
    From related orgs
    $0
    Other
    $21,831
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $339,939
    Bonus
    $0
    Other
    $450
    Deferred
    $20,144
    Nontaxable benefits
    $1,687
    Filer's total
    $362,220

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $518,144,018
    Expenses
    $503,382,472
    Contributions
    $0
    Grants paid
    $358,968
  • 2023
    Revenue
    $531,649,516
    Expenses
    $520,430,177
    Contributions
    $30,708,316
    Grants paid
    $376,329
  • 2022
    Revenue
    $485,726,066
    Expenses
    $492,812,983
    Contributions
    $812,561
    Grants paid
    $435,434

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $425,253,744
    Expenses
    $439,355,784
    Assets (EOY)
    $101,296,548

  • 2020 · 990

    Revenue
    $427,712,941
    Expenses
    $427,235,353
    Assets (EOY)
    $110,139,832

  • 2019 · 990

    Revenue
    $430,610,155
    Expenses
    $435,906,320
    Assets (EOY)
    $118,454,576

  • 2018 · 990

    Revenue
    $417,628,448
    Expenses
    $413,043,304
    Assets (EOY)
    $113,954,633

  • 2017 · 990

    Revenue
    $383,549,682
    Expenses
    $377,990,629
    Assets (EOY)
    $103,181,684

  • 2016 · 990

    Revenue
    $382,028,932
    Expenses
    $381,250,808
    Assets (EOY)
    $99,322,399

  • 2015 · 990

    Revenue
    $399,742,412
    Expenses
    $399,703,584
    Assets (EOY)
    $119,242,329

  • 2014 · 990

    Revenue
    $386,474,607
    Expenses
    $405,386,655
    Assets (EOY)
    $122,708,925

  • 2013 · 990

    Revenue
    $331,541,699
    Expenses
    $347,164,724
    Assets (EOY)
    $133,945,904

  • 2012 · 990

    Revenue
    not reported
    Expenses
    $319,086,292
    Assets (EOY)
    $149,789,374

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

The 10 largest by cash amount. The API serves every itemized grant.

Where these grants went next →

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 11 November 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 9 November 2026 and read 9 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.