· Private foundation
Dr Sjerome & Judith D Tamkin Foundation
Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
What you funded, over time
By grantee IRS cause code (NTEE).
A cause breakdown isn’t shown here: 47% of DR S JEROME & JUDITH D TAMKIN FOUNDATION’s grantee dollars fall outside its nine largest cause areas, whether because the recipient carries no IRS cause code or because its cause sits in the long tail. A chart would be mostly one residual band and misrepresent the portfolio.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2023
- Under $10k7 grants · $31k
- $10k–50k2 grants · $21k
| Recipient | Amount |
|---|---|
| KERK SCHOOL OF MEDICINE USC | $11,000 |
| ONE KID ONE WORLD | $10,000 |
| SKIRBALL CULTURAL CENTER | $5,000 |
| Individual grant recipient | $5,000 |
| TEMPLE SINAI | $5,000 |
| STAND WITH US | $5,000 |
| CHABAD NORTH HOLLYWOOD | $5,000 |
| NEW HORIZONS | $4,000 |
| SCLERODERMA FOUNDATION OF SOUTHERN CALIFORNIA | $1,750 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Dollar for dollar, your grants (FY20–23) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 97% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +61% since the first grant, against +32% for the ones you funded once.
6 repeat relationships — 0 still active in FY2023, 6 since wound down; 9 grantees were first funded in FY2023 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2023, 0% of grant dollars renewed an existing relationship; $52k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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
- SHSCRIPPS HEALTH2× · 2021–2022 · $23k · revenue +30%
- USUC SAN DIEGO FOUNDATION3× · 2020–2022 · $23k · revenue +61%
- MSMOREHOUSE SCHOOL OF MEDICINE2× · 2020–2021 · $18k · revenue +103%
Funded once
- WUWOODBURY UNIVERSITYone grant, 2020 · $8k · revenue -16%
- SFSTILLPOINT FAMILY RESOURCESone grant, 2021 · $7k
- CFCALIFORNIA FASHION ASSOCIATION COMMUNITY DEVELOPMENT FOUNDATIONone grant, 2021 · $5k · revenue +32%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
The scripps research institute ("tsri") performs high impact basic biomedical research, improves the human condition by fostering translation of its discoveries into useful products and engages in the highest quality graduate scientific…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The central mission of the university of southern california is the development of human beings and society as a whole through the cultivation and enrichment of the human mind and spirit. the principal means by which our mission is…
To harness the power of the human immune system and advanced computing technologies to create and translate scientific discoveries into next generation vaccines and therapies for prevention, control and cure of chronic diseases, enabling…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The mission of southern california university of health sciences (scu) is to educate students as competent, caring and successful practitioners of integrative healthcare. the university is committed to providing excellence in academics,…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The mission of the university of california, irvine foundation (uc irvine foundation) is to raise and manage private funds to support uc irvine's broader mission of excellence in teaching, research and public service. to this end, the uc…
At la jolla institute for immunology, our scientists focus on understanding how the immune system works in order to promote human health and prevent disease. our discoveries apply to many diseases, ranging from diabetes to heart disease,…
For reference, the grantee most central to the portfolio’s shape is Uc San Diego Foundation and the most unlike its peers is Parkinson's Resource Organization Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
10 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 10 of the 22 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds SCRIPPS HEALTH ↗
- Who funds UC SAN DIEGO FOUNDATION ↗
- Who funds MOREHOUSE SCHOOL OF MEDICINE ↗
- Who funds ONE KID ONE WORLD ↗
- Who funds WOODBURY UNIVERSITY ↗
- Who funds CALIFORNIA FASHION ASSOCIATION COMMUNITY DEVELOPMENT FOUNDATION ↗
- Who funds SKIRBALL CULTURAL CENTER ↗
- Who funds Parkinson's Resource Organization Inc ↗
- Who funds ISRAEL EMERGENCY ALLIANCE ↗
- Who funds NATIONAL SCLERODERMA FOUNDATION INC ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: National Philanthropic Trust · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization Dr Sjerome & Judith D Tamkin Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to Dr Sjerome & Judith D Tamkin Foundation?
Find your warmest path to Dr Sjerome & Judith D Tamkin Foundation 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.