California · Grantmakers

Foundations That Fund Medical Research in California

Imperigo has identified 572 funders that made 3,872 grants totaling $1.3B to 289 medical research organizations in California, with a median grant of $27K. Every figure below is drawn from IRS Form 990 filings through 2025.

Medical Research Funding in California

Total granted $1.3B
Funders 572
Grants 3,872
Organizations funded 289

Top Funders — page 2 of 4

26. Prostate Cancer Foundation
3 grants to 1 organization · largest $500K · through 2024 · 1.3% of their giving
$1.5M
27. The Tumori Foundation
1 grant to 1 organization · largest $95K · through 2019 · 18.1% of their giving
$95K
28. Human Immunome Project Inc
3 grants to 2 organizations · largest $149K · through 2020 · 5.6% of their giving
$282K
29. California Academy of Family Physicians Foundation
10 grants to 2 organizations · largest $52K · through 2024 · 5.0% of their giving
$313K
38. St Baldrick's Foundation Inc
7 grants to 2 organizations · largest $190K · through 2024
$845K
42. Charities Aid Foundation America
41 grants to 20 organizations · largest $1.0M · through 2024
$3.5M
43. Paypal Charitable Giving Fund
86 grants to 47 organizations · largest $569K · through 2024
$3.3M
48. Santa Barbara Foundation
11 grants to 4 organizations · largest $196K · through 2024
$739K
49. The Chicago Community Trust
10 grants to 3 organizations · largest $1.8M · through 2023
$5.4M
66. California Community Foundation
38 grants to 16 organizations · largest $440K · through 2024
$2.2M
68. Mayo Clinic Group Return
15 grants to 5 organizations · largest $850K · through 2024
$4.3M
70. Impactassetsinc
14 grants to 9 organizations · largest $500K · through 2024
$1.6M
77. The Pew Charitable Trusts
8 grants to 3 organizations · largest $225K · through 2024
$1.1M
86. Orange County Community Foundation
26 grants to 13 organizations · largest $100K · through 2024
$788K
87. Jewish Community Foundation of Los Angeles
26 grants to 10 organizations · largest $86K · through 2024
$764K
95. Kaiser Foundation Hospitals
18 grants to 7 organizations · largest $235K · through 2024
$1.0M
98. Tides Foundation
8 grants to 7 organizations · largest $762K · through 2023
$1.4M
112. The Blackbaud Giving Fund
23 grants to 17 organizations · largest $178K · through 2024
$844K
119. Greater Horizons
3 grants to 2 organizations · largest $600K · through 2024
$794K
170. Natl Christian Charitable Fdn Inc
27 grants to 10 organizations · largest $100K · through 2024
$736K
273. Vanguard Charitable Endowment ProgramDonor-advised
116 grants to 49 organizations · largest $20.5M · through 2024
$96.1M
274. Donor Advised Charitable Giving IncDonor-advised
313 grants to 92 organizations · largest $8.7M · through 2024
$66.9M
275. Fidelity Investments Charitable Gift FundDonor-advised
405 grants to 135 organizations · largest $10.3M · through 2024
$75.3M
276. National Philanthropic TrustDonor-advised
128 grants to 50 organizations · largest $7.0M · through 2024
$33.8M
277. American Online Giving Foundation IncDonor-advised
241 grants to 72 organizations · largest $670K · through 2024
$9.5M

Funders are ordered by how much of their overall giving goes to medical research work in California, not by dollar totals alone — a foundation that concentrates its giving here is usually a better prospect than a larger one for which this is a rounding error. 16 of the funders counted here are donor-advised fund sponsors, which grant on behalf of individual donors and accept no applications; they are marked and ranked last.

Other Causes Funded in California

About This Data

A grant appears here when a funder reported it on its IRS Form 990 and the recipient organization is classified under the NTEE group covering medical research work, with an address in California. Grants are counted from the 2025 filing year backward.

Some 990 grant schedules list a recipient by name and address without an EIN, and those grants cannot be matched to a classification — so the totals above represent identifiable medical research funding in California, not every dollar that reached the sector. Figures are a floor, not a ceiling.

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Research California funders in depth

Full grant histories, recipient lists, officer compensation, multi-year financials, and exports for every foundation Imperigo tracks.