· Private foundation
Dr Joseph B & Lillian Stiefel Foundation Inc
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
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k13 grants · $31k
- $10k–50k1 grant · $10k
| Recipient | Amount |
|---|---|
| CORNELL LAB OF ORNITHOLOGY | $10,000 |
| Individual grant recipient | $7,500 |
| Individual grant recipient | $5,000 |
| NYC BIRD ALLIANCE | $4,000 |
| Turks Caicos Reef Fund | $3,000 |
| PONTE VEDRA CONCER HALL | $2,600 |
| NY BOTANICAL GARDENS | $2,500 |
| CAT ASSISTANCE | $2,000 |
| St Augustine Lighthouse | $1,250 |
| AMERICAN BIRDING ASSOC | $1,000 |
| Assoc of Black Gastroentologists | $1,000 |
| WHITE PLAINS HOSPITAL FOUNDATION | $500 |
| St Augustine Alligator Farm | $300 |
| Individual grant recipient | $200 |
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 (FY17–24) land where the poverty rate runs at 14%, against an area that typically sits at 14%. 48% of your dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.
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 +26% since the first grant, against +3% for the ones you funded once.
19 repeat relationships — 6 still active in FY2024, 13 since wound down; 8 grantees were first funded in FY2024 (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 FY2024, 65% of grant dollars renewed an existing relationship; $14k 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
- ABAmerican Bird Conservancy3× · 2019–2023 · $9k · revenue +26%
- FUFordham University3× · 2018–2020 · $9k · revenue +40%
- TRTHE RIDGEFIELD PLAYHOUSE FOR MOVIES AND THE PERFORMING ARTS INC3× · 2017–2019 · $9k · revenue +22%
Funded once
- IGIndividual grant recipientone grant, 2021 · $5k
- IGIndividual grant recipientone grant, 2021 · $5k
THE DOE FUND INCone grant, 2023 · $3k · revenue +3%
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.
To provide accountable, responsive quality care with the highest degree of sensitivity to the needs of our diverse, multilingual population while fulfilling the professional and educational needs of our members.
Assist banner health complete its mission to make health care easier so life can be better by providing integrated & coordinated care & population health management.
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.
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.
To provide excellent healthcare services without regard to age, sex, race, creed, national origin or disability; to serve as an educational and research center for physicians, nurses and healthcare professionals; to provide health…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The organization provides medical care to improve, maintain, and restore the health of the people in the communities we serve.
To operate an acute care hospital in bridgeport, connecticut for the care and treatment of persons suffering from disease or other physical or mental conditions without regard to race, color, creed, sex, age or ability to pay.
For reference, the grantee most central to the portfolio’s shape is White Plains Hospital Medical Center and the most unlike its peers is Assoc of Black Gastroenterologists. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
13 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. 13 of the 40 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 CAT ASSISTANCE INC ↗
- Who funds American Bird Conservancy ↗
- Who funds Fordham University ↗
- Who funds THE RIDGEFIELD PLAYHOUSE FOR MOVIES AND THE PERFORMING ARTS INC ↗
- Who funds GREENWICH HOSPITAL ↗
- Who funds THE DOE FUND INC ↗
- Who funds FRIENDS OF THE ISRAEL DEFENSE FORCES ↗
- Who funds THE PALACE THEATER GROUP INC ↗
- Who funds SCARSDALE VOLUNTEER AMBULANCE CORPS INC ↗
- Who funds NEW YORK RESTORATION PROJECT ↗
- Who funds ASSOC OF BLACK GASTROENTEROLOGISTS ↗
- Who funds AMERICAN BIRDING ASSOCIATION ↗
- Who funds White Plains Hospital Medical Center ↗
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: The Bank of America Charitable Foundation Inc · Vanguard Charitable Endowment Program · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · 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 Joseph B & Lillian Stiefel Foundation Inc 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, a single department, or state — and drag the year to watch it move.
- The Palace Theater Group Inc — 12% of income from government
- The Ridgefield Playhouse for Movies and the Performing Arts Inc — 1% of income from government
- Greenwich Hospital — 0% of income from government
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 Joseph B & Lillian Stiefel Foundation Inc?
Find your warmest path to Dr Joseph B & Lillian Stiefel 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.