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MAINSAIL HEALTH PARTNERS

EIN 84-4667819 CHARLESTON, SC

Revenue 2023
$125,735,337
Expenses 2023
$5,077,618

Program services were 78.0% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
E11
Classification
1000
Street
22 WESTEDGE ST STE 319

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 · 2023

Mission

TO PROMOTE AND SUPPORT, INDEPENDENTLY BUT WITHIN ALIGNMENT WITH AND IN RELATION TO, MEDICAL UNIVERSITY OF SOUTH CAROLINA (MUSC) AND ITS CHARITABLE, ELEEMOSYNARY, EDUCATIONAL, SCIENTIFIC MISSION, PURPOSE, AND PROGRAMS.

Activities or mission (Part I)

THE PURPOSE OF THE CORPORATION IS TO SUPPORT THE CHARITABLE, SCIENTIFIC, ELEEMOSYNARY, AND EDUCATIONAL MISSIONS OF THE MEDICAL UNIVERSITY OF SOUTH CAROLINA (MUSC), AN INSTITUTION OF HIGHER LEARNING AND AGENCY OF THE STATE OF SOUTH CAROLINA BY AND THROUGH EXPANDED HEALTHCARE OUTREACH ACROSS RURAL AREAS OF THE STATE AND COLLABORATIONS IN THE DELIVERY OF CARE WITH PRIVATE INDUSTRY THAT ARE ALIGNED WITH THE MISSION AND OBJECTIVES OF MUSC. MOREOVER, SUCH EXPANSION WILL PROVIDE MEANINGFUL NEW JOBS AND OTHER ECONOMIC BENEFIT TO RURAL COUNTIES ACROSS THE STATE, WHICH ARE OFTEN UNDERSERVED IN TERMS OF ACCESS TO HEALTHCARE.

  • TO EXPLORE, INVESTIGATE, CONTRACT FOR, AND ENGAGE IN COLLABORATIVE INITIATIVES WITH OTHER PERSONS TO UNDERTAKE SCIENTIFIC, CLINICAL, EDUCATIONAL, AND RESEARCH ACTIVITIES AND ENDEAVORS CONSISTENT WITH THE OBJECTIVES AND MISSION OF MUSC; TO PROMOTE, ENCOURAGE AND AID INTERACTIONS AND COLLABORATIVE RELATIONSHIPS WITH PRIVATE INDUSTRY THAT ARE ALIGNED WITH THE MISSION AND OBJECTIVES OF MUSC, TO THE EXTENT PERMITTED BY APPLICABLE LAW; TO SEEK AND ESTABLISH STRATEGIC VENTURES WITH INDEPENDENT ENTITIES THAT BENEFIT THE MUSC ENTERPRISE AND THE COMMUNITY IT SERVES; TO PROMOTE THE RECRUITMENT AND RETENTION OF A SUPERIOR FACULTY BY ENCOURAGING AND AIDING THEIR PERSONAL DEVELOPMENT THROUGH THE SUPPORT OF MEDICAL AND CLINICAL SPONSORED RESEARCH PROGRAMS, AGREEMENTS, AND INITIATIVES AT OR INVOLVING MUSC; TO PROMOTE AND SUPPORT THE CHARITABLE, ELEEMOSYNARY, EDUCATIONAL, MEDICAL, SCIENTIFIC AND RESEARCH PURPOSES OF MUSC BY AND THROUGH SUPPORT OF MEDICAL UNIVERSITY HOSPITAL AUTHORITY (MUHA), UNIVERSITY MEDICAL ASSOCIATES OF THE MEDICAL UNIVERSITY OF SOUTH CAROLINA (UMA), AND ANY OTHER ORGANIZATION RECOGNIZED, FROM TIME TO TIME, BY MUSC AS AN AFFILIATE; TO PROMOTE, SUPPORT AND AID ANY AND ALL OTHER ACTIVITIES AND PROGRAMS, WHICH WILL FURTHER THE MISSION AND PROGRAMS OF MUSC.

    Expenses $3,962,867 · Revenue $2,515,213

As filed on the 2023 return.

Officers and directors · 2023

As listed in Part VII of the 2023 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • CHARLES SCHULZE

    DIRECTOR

    Total calculated
    $500
    From this org
    $0
    From related orgs
    $500
    Other
    $0
    Hours/week
    2 + 5 related
  • DONALD R JOHNSON II

    CHAIR & DIRECTOR

    Total calculated
    $500
    From this org
    $0
    From related orgs
    $500
    Other
    $0
    Hours/week
    2 + 5 related
  • FORREST ALTON

    DIRECTOR

    Total calculated
    $500
    From this org
    $0
    From related orgs
    $500
    Other
    $0
    Hours/week
    2 + 5 related
  • JACK JONES

    DIRECTOR

    Total calculated
    $500
    From this org
    $0
    From related orgs
    $500
    Other
    $0
    Hours/week
    2 + 5 related
  • JOHN OSBORNE

    DIRECTOR

    Total calculated
    $500
    From this org
    $0
    From related orgs
    $500
    Other
    $0
    Hours/week
    2 + 5 related
  • STUART SMITH

    DIRECTOR

    Total calculated
    $500
    From this org
    $0
    From related orgs
    $500
    Other
    $0
    Hours/week
    2 + 5 related
  • TODD LILLIBRIDGE

    DIRECTOR

    Total calculated
    $500
    From this org
    $0
    From related orgs
    $500
    Other
    $0
    Hours/week
    2 + 5 related
  • PATRICK CAWLEY

    CEO

    Total calculated
    $1,196,271
    From this org
    $0
    From related orgs
    $1,155,482
    Other
    $40,789
    Hours/week
    3 + 40 related

    Schedule J breakdown matched by us

    Base
    $0 + $1,155,482 related
    Bonus
    $0
    Other
    $0
    Deferred
    $0 + $30,000 related
    Nontaxable benefits
    $0 + $10,789 related
    Filer's total
    $0 + $1,196,271 related

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

  • 2023
    Revenue
    $125,735,337
    Expenses
    $5,077,618
    Contributions
    $121,688,655
    Grants paid
    $0
  • 2022
    Revenue
    $2,006,664
    Expenses
    $3,531,282
    Contributions
    $270,000
    Grants paid
    $0

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
    $11,464,426
    Expenses
    $554,316
    Assets (EOY)
    $76,368,989
  • 2020 · 990

    Revenue
    $3,002,010
    Expenses
    $98,050
    Assets (EOY)
    $3,001,710

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.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

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.

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 2023 return

Declared as related by

Taxable family

From Schedule R Parts I, III and IV: entities that legally are the filer, and taxable partnerships, corporations and trusts it is related to. These record ownership and control, not shared board members or money.

Related corporations and trusts on its 2023 return

  • SPINNAKER HEALTH LLC

    C Corporation · HEALTHCARE · SC · 100% owned · share of income -$736,881 · share of assets $19,161,164

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 13 October 2026, under deductibility SO.

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 13 October 2026 and read 29 October 2026, for every organization at once. Returns through tax year 2023, the newest we have parsed for this organization.