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MARSHFIELD CLINIC INC

EIN 39-0452970 MARSHFIELD, WI

Revenue 2024
$596,530,287
Expenses 2024
$591,495,305

Program services were 98.7% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
E300
Classification
3000
Street
1000 N OAK AVE

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).

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.

  • ALPA SHAH MD

    CHAIR (THRU MAR 2024)

    Total calculated
    $292,820
    From this org
    $283,360
    From related orgs
    $0
    Other
    $9,460
    Hours/week
    38 + 5 related

    Schedule J breakdown matched by us

    Base
    $279,695
    Bonus
    $0
    Other
    $3,665
    Deferred
    $7,562
    Nontaxable benefits
    $1,898
    Filer's total
    $292,820

  • MATTHEW OELSTROM MD

    CHAIR

    Total calculated
    $537,690
    From this org
    $499,726
    From related orgs
    $0
    Other
    $37,964
    Hours/week
    53 + 3 related

    Schedule J breakdown matched by us

    Base
    $377,912
    Bonus
    $121,394
    Other
    $420
    Deferred
    $8,625
    Nontaxable benefits
    $29,339
    Filer's total
    $537,690

  • ELVIS PETER MD

    VICE CHAIR

    Total calculated
    $860,440
    From this org
    $812,372
    From related orgs
    $0
    Other
    $48,068
    Hours/week
    53 + 4 related

    Schedule J breakdown matched by us

    Base
    $793,788
    Bonus
    $0
    Other
    $18,584
    Deferred
    $8,625
    Nontaxable benefits
    $39,443
    Filer's total
    $860,440

  • KENT RAY DO

    SECRETARY

    Total calculated
    $453,980
    From this org
    $405,006
    From related orgs
    $0
    Other
    $48,974
    Hours/week
    53 + 3 related

    Schedule J breakdown matched by us

    Base
    $401,874
    Bonus
    $0
    Other
    $3,132
    Deferred
    $8,625
    Nontaxable benefits
    $40,349
    Filer's total
    $453,980

  • MATTHEW THOMAS MD

    TREASURER

    Total calculated
    $919,616
    From this org
    $877,617
    From related orgs
    $0
    Other
    $41,999
    Hours/week
    52 + 3 related

    Schedule J breakdown matched by us

    Base
    $796,625
    Bonus
    $54,860
    Other
    $26,132
    Deferred
    $8,625
    Nontaxable benefits
    $33,374
    Filer's total
    $919,616

  • TYLER DAHL MD

    BOARD MEMBER (THRU MAR 2024)

    Total calculated
    $1,208,991
    From this org
    $1,169,680
    From related orgs
    $0
    Other
    $39,311
    Hours/week
    52 + 2 related

    Schedule J breakdown matched by us

    Base
    $1,065,184
    Bonus
    $78,910
    Other
    $25,586
    Deferred
    $8,625
    Nontaxable benefits
    $30,686
    Filer's total
    $1,208,991

  • JAYANTH VEDRE MD

    BOARD MEMBER

    Total calculated
    $748,201
    From this org
    $711,891
    From related orgs
    $0
    Other
    $36,310
    Hours/week
    52 + 2 related

    Schedule J breakdown matched by us

    Base
    $467,329
    Bonus
    $218,976
    Other
    $25,586
    Deferred
    $8,625
    Nontaxable benefits
    $27,685
    Filer's total
    $748,201

  • BART ISAACSON MD

    BOARD MEMBER (THRU MAR 2024)

    Total calculated
    $360,987
    From this org
    $322,040
    From related orgs
    $0
    Other
    $38,947
    Hours/week
    52 + 2 related

    Schedule J breakdown matched by us

    Base
    $320,234
    Bonus
    $0
    Other
    $1,806
    Deferred
    $8,625
    Nontaxable benefits
    $30,322
    Filer's total
    $360,987

  • BARBARA BOYER MD

    BOARD MEMBER

    Total calculated
    $472,809
    From this org
    $429,508
    From related orgs
    $0
    Other
    $43,301
    Hours/week
    52 + 2 related

    Schedule J breakdown matched by us

    Base
    $425,536
    Bonus
    $0
    Other
    $3,972
    Deferred
    $7,614
    Nontaxable benefits
    $35,687
    Filer's total
    $472,809

  • DAVID JUNKER MD

    BOARD MEMBER

    Total calculated
    $981,398
    From this org
    $929,786
    From related orgs
    $0
    Other
    $51,612
    Hours/week
    52 + 3 related

    Schedule J breakdown matched by us

    Base
    $903,654
    Bonus
    $0
    Other
    $26,132
    Deferred
    $8,625
    Nontaxable benefits
    $42,987
    Filer's total
    $981,398

  • PATRICK WOLF DO

    BOARD MEMBER (THRU MAR 2024)

    Total calculated
    $69,852
    From this org
    $65,500
    From related orgs
    $0
    Other
    $4,352
    Hours/week
    52 + 3 related

  • JESSICA WERNBERG MD

    BOARD MEMBER

    Total calculated
    $499,749
    From this org
    $459,068
    From related orgs
    $0
    Other
    $40,681
    Hours/week
    52 + 4 related

    Schedule J breakdown matched by us

    Base
    $455,936
    Bonus
    $0
    Other
    $3,132
    Deferred
    $8,625
    Nontaxable benefits
    $32,056
    Filer's total
    $499,749

  • CHRISTOPHER ADLER MD

    BOARD MEMBER

    Total calculated
    $390,670
    From this org
    $367,109
    From related orgs
    $0
    Other
    $23,561
    Hours/week
    52 + 2 related

    Schedule J breakdown matched by us

    Base
    $364,498
    Bonus
    $161
    Other
    $2,450
    Deferred
    $8,625
    Nontaxable benefits
    $14,936
    Filer's total
    $390,670

  • KATHERINE WINIARCZYK DO

    BOARD MEMBER

    Total calculated
    $369,999
    From this org
    $332,455
    From related orgs
    $0
    Other
    $37,544
    Hours/week
    52 + 2 related

    Schedule J breakdown matched by us

    Base
    $332,093
    Bonus
    $0
    Other
    $362
    Deferred
    $7,463
    Nontaxable benefits
    $30,081
    Filer's total
    $369,999

  • SANJAY KUMAR MD

    BOARD MEMBER

    Total calculated
    $1,114,969
    From this org
    $1,072,801
    From related orgs
    $0
    Other
    $42,168
    Hours/week
    52 + 2 related

    Schedule J breakdown matched by us

    Base
    $1,046,669
    Bonus
    $0
    Other
    $26,132
    Deferred
    $8,625
    Nontaxable benefits
    $33,543
    Filer's total
    $1,114,969

  • BRIAN HOERNEMAN MD

    INTERIM MCHS CEO

    Total calculated
    $1,623,181
    From this org
    $0
    From related orgs
    $1,584,168
    Other
    $39,013
    Hours/week
    1 + 54 related

    Schedule J breakdown matched by us

    Base
    $0 + $1,043,925 related
    Bonus
    $0 + $516,277 related
    Other
    $0 + $23,966 related
    Deferred
    $0 + $8,625 related
    Nontaxable benefits
    $0 + $30,388 related
    Filer's total
    $0 + $1,623,181 related

  • JEANETTE WOJTALEWICZ

    INTERIM MCHS CFO

    Total calculated
    $972,510
    From this org
    $0
    From related orgs
    $972,510
    Other
    $0
    Hours/week
    1 + 54 related

    Schedule J breakdown matched by us

    Base
    $0
    Bonus
    $0
    Other
    $0 + $972,510 related
    Deferred
    $0
    Nontaxable benefits
    $0
    Filer's total
    $0 + $972,510 related

  • SAMANTHA KLEBE DO

    CHIEF MEDICAL OFFICER

    Total calculated
    $739,860
    From this org
    $0
    From related orgs
    $703,503
    Other
    $36,357
    Hours/week
    1 + 54 related

    Schedule J breakdown matched by us

    Base
    $0 + $476,625 related
    Bonus
    $0 + $201,334 related
    Other
    $0 + $25,544 related
    Deferred
    $0 + $8,625 related
    Nontaxable benefits
    $0 + $27,732 related
    Filer's total
    $0 + $739,860 related

  • KATHY BRESSLER

    MCHS COO

    Total calculated
    $1,023,032
    From this org
    $0
    From related orgs
    $985,571
    Other
    $37,461
    Hours/week
    1 + 54 related

    Schedule J breakdown matched by us

    Base
    $0 + $711,231 related
    Bonus
    $0 + $241,650 related
    Other
    $0 + $32,690 related
    Deferred
    $0 + $8,625 related
    Nontaxable benefits
    $0 + $28,836 related
    Filer's total
    $0 + $1,023,032 related

  • JERARD JENSEN

    MCHS GENERAL COUNSEL (THRU JAN 2024)

    Total calculated
    $900,555
    From this org
    $0
    From related orgs
    $889,281
    Other
    $11,274
    Hours/week
    1 + 54 related

    Schedule J breakdown matched by us

    Base
    $0 + $54,195 related
    Bonus
    $0
    Other
    $0 + $835,086 related
    Deferred
    $0
    Nontaxable benefits
    $0 + $11,274 related
    Filer's total
    $0 + $900,555 related

  • LISA BOERO

    MCHS GENERAL COUNSEL

    Total calculated
    $426,306
    From this org
    $0
    From related orgs
    $415,495
    Other
    $10,811
    Hours/week
    1 + 54 related

    Schedule J breakdown matched by us

    Base
    $0 + $411,868 related
    Bonus
    $0
    Other
    $0 + $3,627 related
    Deferred
    $0 + $8,625 related
    Nontaxable benefits
    $0 + $2,186 related
    Filer's total
    $0 + $426,306 related

  • VIVEKANANDA GONUGUNTA MD

    PHYSICIAN

    Total calculated
    $2,693,464
    From this org
    $2,682,634
    From related orgs
    $0
    Other
    $10,830
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $2,153,315
    Bonus
    $502,347
    Other
    $26,972
    Deferred
    $8,625
    Nontaxable benefits
    $2,205
    Filer's total
    $2,693,464

  • ADEDAYO ONITILO MD

    PHYSICIAN

    Total calculated
    $1,601,986
    From this org
    $1,557,817
    From related orgs
    $0
    Other
    $44,169
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $1,526,685
    Bonus
    $5,000
    Other
    $26,132
    Deferred
    $8,625
    Nontaxable benefits
    $35,544
    Filer's total
    $1,601,986

  • MOHAMMAD ALAOUA MD

    PHYSICIAN

    Total calculated
    $1,498,074
    From this org
    $1,449,119
    From related orgs
    $0
    Other
    $48,955
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $1,446,953
    Bonus
    $0
    Other
    $2,166
    Deferred
    $8,625
    Nontaxable benefits
    $40,330
    Filer's total
    $1,498,074

  • OLATILEWA AWE MD

    PHYSICIAN

    Total calculated
    $1,455,350
    From this org
    $1,431,408
    From related orgs
    $0
    Other
    $23,942
    Hours/week
    50

    Schedule J breakdown matched by us

    Base
    $1,147,273
    Bonus
    $258,549
    Other
    $25,586
    Deferred
    $8,625
    Nontaxable benefits
    $15,317
    Filer's total
    $1,455,350

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 — 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
    $596,530,287
    Expenses
    $591,495,305
    Contributions
    $31,391,785
    Grants paid
    $603,000
  • 2023
    Revenue
    $633,588,126
    Expenses
    $618,274,329
    Contributions
    $38,600,784
    Grants paid
    $691,520
  • 2022
    Revenue
    $670,043,868
    Expenses
    $674,567,180
    Contributions
    $57,333,847
    Grants paid
    $1,973,495

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

  • 2024 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2023 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

Nonprofiteer parses the Form 990 only. 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.

Grants made

Where these grants went next →

Grants received

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

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2024 return

Declared as related by

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 10 September 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.