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· Public charity

Mark Twain Medical Center

MARK TWAIN MEDICAL CENTER is committed to furthering the charitable and community-based health care purposes, mission, vision and core values.

$434k
Granted FY2025still arriving
3
Grants FY2025still arriving
1
States reached
$288k
Largest
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Health$3.7MHousing & Shelter$149kYouth Development$66k
02FY2025 · 3 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 3 grants below total $423,691, the rows itemized in this filing. The $434,230 headline is the total grant expense on the return; the other $10,539 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.

By grant size · FY2025

  • $10k–50k1 grant · $41k
  • $50k–250k1 grant · $96k
  • $250k+1 grant · $288k
$95,588
Median grant
1
States reached
$90M
Total assets
Largest grants
RecipientAmount
MARK TWAIN MEDICAL CENTER FOUNDATION$287,603
CALIFORNIA HEALTH FOUNDATION AND TRUST$95,588
HABITAT FOR HUMANITY INTERNATIONAL INC$40,500
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 100% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%DIGNITY COMMUNITY CARE: $129k → 10%CALAVERAS COUNTY OFFICE OF EDUCATION: $50k → 12%California Health Foundation and Trust: $186k → 12%DIGNITY HEALTH: $41k → 10%HABITAT FOR HUMANITY INTERNATIONAL INC: $77k → 12%CALIFORNIA HEALTH FOUNDATION AND TRUST: $150k → 12%DIGNITY COMMUNITY CARE: $8k → 10%HABITAT FOR HUMANITY INTERNATIONAL INC: $41k → 12%California Health Foundation and Trust: $138k → 12%SIERRA HOPE: $35k → 12%CALIFORNIA HEALTH FOUNDATION AND TRUST: $102k → 12%SIERRA HOPE: $31k → 12%CALIFORNIA HEALTH FOUNDATION AND TRUST: $96k → 12%HABITAT FOR HUMANITY INTERNATIONAL INC: $31k → 12%CALIFORNIA HEALTH FOUNDATION AND TRUST: $64k → 12%MARK TWAIN MEDICAL CENTER FOUNDATION: $346k → 12%CALIFORNIA HEALTH FOUNDATION AND TRUST: $64k → 12%MARK TWAIN MEDICAL CENTER FOUNDATION: $335k → 12%California Health Foundation and Trust: $53k → 12%MARK TWAIN MEDICAL CENTER FOUNDATION: $290k → 12%CALIFORNIA HEALTH FOUNDATION AND TRUST: $39k → 12%Mark Twain Medical Center Foundation: $289k → 12%MARK TWAIN MEDICAL CENTER FOUNDATION: $288k → 12%Mark Twain Medical Center Foundation: $287k → 12%MARK TWAIN MEDICAL CENTER FOUNDATION: $270k → 12%Mark Twain Medical Center Foundation: $244k → 12%CALAVERAS MENTORING FOUNDATION: $35k → 12%MARK TWAIN MEDICAL CENTER FOUNDATION: $197k → 12%CALAVERAS MENTORING FOUNDATION: $31k → 12%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

98%of every dollar goes to organizations it has funded before.
$3.9M · 6 repeat orgs$91k to everyone else

Grantees it renews have grown median revenue +9% since the first grant, against +3% for those funded once.

6 repeat relationships: 3 still active in FY2025, 3 since wound down.

How the two cohorts compare

Re-uppedFunded once

Organizations

6
2

Total granted

$3.9M
$91k

Median revenue growth · since first grant

+9%
+3%

Still filing today

100%
50%

New vs renewed · share of each year

In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24’25
HealthPhilanthropyYouth DevelopmentOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.

Backed again, and grew

  • MT
    Mark Twain Medical Center Foundation
    9× · 2017–2025 · $2.5M · revenue +68% · 44% of their budget
  • DC
    DIGNITY COMMUNITY CARE
    2× · 2021–2022 · $138k · revenue +9%
  • SH
    SIERRA HOPE
    3× · 2022–2024 · $66k · revenue +17%

Funded once

  • CC
    CALAVERAS COUNTY OFFICE OF EDUCATION
    one grant, 2022 · $50k
  • DH
    DIGNITY HEALTH
    one grant, 2024 · $41k · revenue +3%
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Cal Med Foundation
Education
2
Californians to Protect Community Healthcare

To protect business transactions between health care facilities and provider groups with private investors from excessive government overreach in California through public education and advocacy

—
3
California Health M R C
Community Improvement
4
Sutter Valley Hospitals

MISSION STATEMENT: MISSION: CARING FOR OUR PATIENTS FIRST AND OUR PEOPLE ALWAYS. VISION: TO BE THE MOST COMPREHENSIVE, INTEGRATED AND CONNECTED HEALTH SYSTEM FOR GETTING AND STAYING WELL. VALUES: EXCELLENCE - We deliver high-quality,…

Health
5
Sutter Bay Hospitals

MISSION STATEMENT: MISSION: CARING FOR OUR PATIENTS FIRST AND OUR PEOPLE ALWAYS. VISION: TO BE THE MOST COMPREHENSIVE, INTEGRATED AND CONNECTED HEALTH SYSTEM FOR GETTING AND STAYING WELL. VALUES: EXCELLENCE - We deliver high-quality,…

Health
6
Pacific Central Coast Health Centers

Pacific central coast health centers', sponsored by dignity community care, mission is to provide access to cost effective, quality medical services in the northern santa barbara county, san luis obispo county, kern county and ventura…

Health
7
California Hospital Medical Center Foundation

California hospital medical center foundation is organized to raise, manage and distribute funds in support of the mission and values of california hospital medical center in serving the community.

Health
8
Dignity Health Medical Foundation

To establish, operate, and maintain a multi-specialty outpatient medical clinic to benefit the communities we serve.

Health
9
Central Valley Health Foundation

The Central Valley Health Foundation (CVHF) is a California not-for-profit corporation. The Foundation was organized to coordinate the solicitation of contributions through its operations and to disburse such contributions, earnings, and…

Philanthropy
10
Community Health Partners

Community health partners' mission is to build the valley's premier integrated healthcare delivery system that reliably meets the healthcare needs of our region while exceeding patient expectations.

Health
11
Community Hospital of San Bernardino

Community hospital of san bernardino ("chsb") is a non-profit, full-service, acute care facility in business to provide acute inpatient care, long-term care and a wide range of ancillary and therapeutic care to the community we serve. our…

Health
12
Sierra Health Foundation
Health
How this is measured
The grantee most central to the portfolio’s shape is Dignity Health; the most unlike its peers is Calaveras Mentoring Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

8 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

2
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
8/8
Grantees still filing
5/8
Grew since first funded

Where the money sits, by cause and then by grantee

Mark Twain Medical Center Foundation: $2,546,961 · HealthMark Twain Medical Center FoundationDIGNITY COMMUNITY CARE: $137,509 · Health+1 more: $41,337 · HealthCALIFORNIA HEALTH FOUNDATION AND TRUST: $890,506 · PhilanthropyCALIFORNIA HEALTH FOUNDAT…Habitat for Humanity of Calavera: $148,652 · OtherCALAVERAS MENTORING FOUNDATION: $66,172 · OtherCALAVERAS COUNTY OFFICE OF EDUCATION: $50,000 · OtherSIERRA HOPE: $66,172 · Youth Development
Health$2,725,807Philanthropy$890,506Other$264,824Youth Development$66,172

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetMark Twain Medical Center Foundation: $2,546,961 over 9y, 44% of budgetCALIFORNIA HEALTH FOUNDATION AND TRUST: $890,506 over 9y, 0.3% of budgetHabitat for Humanity of Calavera: $148,652 over 3y, 23% of budgetDIGNITY COMMUNITY CARE: $137,509 over 2y, 0.0% of budgetSIERRA HOPE: $66,172 over 3y, 4.1% of budgetCALAVERAS MENTORING FOUNDATION: $66,172 over 2y, 44% of budgetDIGNITY HEALTH: $41,337 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a set of overlaps that mostly run through this funder rather than between each other.

Calaveras Community FoundationCA15.8× affinity5 shared granteesties to 0 of 0Hover any node to trace its alignments.Compare side by side →

Open a dossier: Calaveras Community Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Mark Twain Medical Center funds: left to right is the share of its income from government, bottom to top the share from Mark Twain Medical Center. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%3%13%28%50%funder's share of their income ↑0%10%20%30%40%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    1report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–40%
    typical government reliance, FY20–25
    How this is measured
    Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.

    On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 8 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

    How this is measured
    Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

    Generated from the IRS Form 990 e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

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