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The Wyss Medical Foundation Inc at a glance

· Private foundation

The Wyss Medical Foundation Inc

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$12M
Granted FY2024still arriving
15
Grants FY2024still arriving
10
States reached
$2.6M
Largest
01What it fundsRead
02Its granteesRead
03Its fieldRead
04Through PlinthRead
01What it funds
0187% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.

Health$21MInternational$14MEducation$10MArts & Culture$1.2MScience & Tech$400kRecreation & Sports$102kFood & Nutrition$75kPhilanthropy$55kOther$0
02FY2024 · 15 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • $10k–50k1 grant · $49k
  • $50k–250k1 grant · $170k
  • $250k+13 grants · $12M
$610,000
Median grant
10
States reached
$29M
Total assets
Largest grants
RecipientAmount
The Regents of the University of California$2,639,125
Alice Foundation$2,398,971
Sign Fracture Care International$1,475,000
Day One Trauma Support$985,050
The End Fund Inc.$777,013
Phare Bio Inc.$725,000
Scalpel at the Cross$692,000
Rutgers University$610,000
Massachusetts General Hospital$545,532
New England Electric Railway Historical Society$422,151
Pediatric Spine Foundation$347,000
University of Pennsylvania$300,000
The UCLA Foundation$300,000
UT Southwestern Medical Center$170,000
Kagondo St Joseph Hospital Foundation$49,400
02Its grantees
repeat funding

Who it funds again

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

86%of every dollar goes to organizations it has funded before.
$38M · 14 repeat orgs$6.1M to everyone else

Grantees it renews have grown median revenue +59% since the first grant, against +8% for those funded once.

14 repeat relationships: 9 still active in FY2024, 5 since wound down; 4 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

14
13

Total granted

$38M
$1.8M

Median revenue growth · since first grant

+59%
+8%

Still filing today

64%
46%

New vs renewed · share of each year

In FY2024, 63% of grant dollars renewed an existing relationship; $4.4M went to new ones.

50%100%’19’21’22’24
RenewedFirst-time

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

’19’21’22’24
HealthEducationInternationalScience & TechPhilanthropyOther
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

  • SG
    SEED GLOBAL HEALTH
    3× · 2019–2022 · $12M · revenue +412% · 78% of their budget
  • TC
    THE CHILDREN'S HOSPITAL OF PHILADELPHIA
    3× · 2019–2022 · $3.0M · revenue +59%
  • SF
    SIGN FRACTURE CARE INTERNATIONAL
    2× · 2021–2024 · $2.8M · revenue +436%

Funded once

  • VF
    VALERIAS FOUNDATION FOR KCNT1 RESEARCH INC
    one grant, 2021 · $500k · revenue -94%
  • AH
    ATRIUM HEALTH FOUNDATIONgraduated
    one grant, 2019 · $200k · revenue +195%
  • RUTGERS UNIVERSITY FOUNDATION
    one grant, 2019 · $180k · revenue +8%
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.

03Its 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
Stony Brook Urology University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
2
Stony Brook Surgical Associates University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
3
Stony Brook Internists University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
4
President and Fellows of Harvard College

Undergraduate, graduate, and professional education and research across a broad array of academic domains.

Education
5
Neurology Associates of Stony Brook University Faculty Practice Corp

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
6
Stony Brook Orthopedic Associates University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
7
Stony Brook Ophthalmology University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
8
Stony Brook Childrens Services University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health
9
New York University

Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.

Education
10
University of Maryland Neurosurgeryassociates Pa

Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…

Education
11
University of Maryland Physicians Pa

Under the medical service plan of the university of maryland school of medicine, medical services are rendered by the members of the faculty on behalf of the school of medicine in connection with their duties to provide clinical…

—
12
The Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
How this is measured
The grantee most central to the portfolio’s shape is Pediatric Spine Foundation; the most unlike its peers is Wylie's Day Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
03the grantee network

20 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. 20 of the 35 grantees resolved in that span have returns of their own we could reconcile.

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

6
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
20/20
Grantees still filing
13/20
Grew since first funded

Where the money sits, by cause and then by grantee

Massachusetts General Hospital: $5,201,366 · OtherMassachusetts General HospitalAlice Foundation: $2,940,813 · OtherAlice FoundationSign Fracture Care International: $2,850,000 · OtherSign Fracture Care InternationalThe Regents of the University of California: $2,639,125 · OtherThe Regents of the University of Califor…Rutgers University: $1,220,000 · OtherRutgers UniversityDay One Trauma Support: $985,050 · OtherDay One Trauma SupportNEW ENGLAND ELECTRIC RAILWAY HISTORICAL SOCIETY: $922,151 · Other+9 more: $1,208,271 · Other+9 moreSEED GLOBAL HEALTH: $11,500,030 · EducationSEED GLOBAL HEALTHUCLA FOUNDATION: $3,970,800 · EducationUCLA FOUNDATIONTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $1,547,000 · EducationTRUSTEES OF THE UNIVERSITY OF PENNSYLVAN…+4 more: $805,000 · EducationTHE CHILDREN'S HOSPITAL OF PHILADELPHIA: $3,000,000 · HealthTHE CHILDREN'S HOSPITAL…SIGN FRACTURE CARE INTERNATIONAL: $2,825,000 · HealthSIGN FRACTURE CARE INTE…PHARE BIO INC: $2,125,000 · HealthPHARE BIO INCPEDIATRIC SPINE FOUNDATION: $1,041,000 · HealthPEDIATRIC SPINE FOUNDAT…SAN FRANCISCO GENERAL HOSPITAL FOUNDATION: $756,000 · HealthSAN FRANCISCO GENERAL H…VALERIAS FOUNDATION FOR KCNT1 RESEARCH INC: $500,000 · Health+1 more: $200,000 · HealthThe End Fund Inc: $2,628,662 · InternationalSCALPEL AT THE CROSS INC: $692,000 · International+1 more: $50,000 · InternationalThe Salk Institute for Biological Studies: $400,000 · Science & TechWYLIE'S DAY FOUNDATION: $55,000 · Philanthropy
Other$17,966,776Education$17,822,830Health$10,447,000International$3,370,662Science & Tech$400,000Philanthropy$55,000

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 budgetSEED GLOBAL HEALTH: $11,500,030 over 3y, 78% of budgetUCLA FOUNDATION: $3,970,800 over 3y, 0.4% of budgetTHE CHILDREN'S HOSPITAL OF PHILADELPHIA: $3,000,000 over 3y, 0.0% of budgetSIGN FRACTURE CARE INTERNATIONAL: $2,825,000 over 2y, 21% of budgetThe End Fund Inc: $2,628,662 over 3y, 1.7% of budgetPHARE BIO INC: $2,125,000 over 3y, 66% of budgetTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $1,547,000 over 4y, 0.0% of budgetPEDIATRIC SPINE FOUNDATION: $1,041,000 over 3y, 33% of budgetNEW ENGLAND ELECTRIC RAILWAY HISTORICAL SOCIETY: $922,151 over 3y, 27% of budgetSAN FRANCISCO GENERAL HOSPITAL FOUNDATION: $756,000 over 2y, 2.0% of budgetSCALPEL AT THE CROSS INC: $692,000 over 1y, 44% of budgetThe Salk Institute for Biological Studies: $400,000 over 3y, 0.1% of budgetYale University: $300,000 over 1y, 0.0% of budgetMassachusetts Institute of Technology: $200,000 over 1y, 0.0% of budgetATRIUM HEALTH FOUNDATION: $200,000 over 1y, 0.4% of budgetRUTGERS UNIVERSITY FOUNDATION: $180,000 over 1y, 0.1% of budgetLA SALLE UNIVERSITY: $125,000 over 1y, 0.1% of budgetWYLIE'S DAY FOUNDATION: $55,000 over 1y, 52% of budgetMEDECINS SANS FRONTIERES USA INC: $50,000 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.

  • Who funds SEED GLOBAL HEALTH ↗
  • Who funds UCLA FOUNDATION ↗
  • Who funds THE CHILDREN'S HOSPITAL OF PHILADELPHIA ↗
  • Who funds SIGN FRACTURE CARE INTERNATIONAL ↗
  • Who funds The End Fund Inc ↗
  • Who funds PHARE BIO INC ↗
  • Who funds TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA ↗
  • Who funds PEDIATRIC SPINE FOUNDATION ↗
  • Who funds NEW ENGLAND ELECTRIC RAILWAY HISTORICAL SOCIETY ↗
  • Who funds SAN FRANCISCO GENERAL HOSPITAL FOUNDATION ↗
  • Who funds SCALPEL AT THE CROSS INC ↗
  • Who funds VALERIAS FOUNDATION FOR KCNT1 RESEARCH INC ↗
  • Who funds The Salk Institute for Biological Studies ↗
  • Who funds Yale University ↗
  • Who funds Massachusetts Institute of Technology ↗
  • Who funds ATRIUM HEALTH FOUNDATION ↗
  • Who funds RUTGERS UNIVERSITY FOUNDATION ↗
  • Who funds LA SALLE UNIVERSITY ↗
  • Who funds WYLIE'S DAY FOUNDATION ↗
  • Who funds MEDECINS SANS FRONTIERES USA INC ↗

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 tightly interlocked group: most of these funders back each other's grantees too.

Vanguard Charitable E…Donor Advised Charita…American Online Givin…Fidelity Investments …Amazonsmile Foundation
Vanguard Charitable Endowment ProgramPA8.3× affinity5 shared granteesties to 4 of 4Hover any node to trace its alignments.Compare side by side →

Open a dossier: Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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.
04Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to The Wyss Medical Foundation Inc?

Find your warmest path to The Wyss Medical Foundation Inc through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

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 35 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-PF e-file return for fiscal year 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Possibly out of date. A more recent filing (FY2025) is on record and reports $41M of grant expense with no grantee named in the published copy. A private foundation itemizes every grant it makes, so a return carrying none has filed its list as an attachment that the public copy does not include. The figures above are therefore from FY2024, the most recent year this funder’s grantee list reached the public record.

Source object · view filing

Play a game based on Wyss Medical’s filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home