American Society for Radiation Oncology
Arlington, VA · EIN 42-0943164. Reported 55 grants totalling $3,034,870 to 36 organizations across tax years 2021-2025, on Form 990 Schedule I.
Does this grantmaker accept applications?
Its tax return does not say, and we will not guess. Private foundations file Form 990-PF, which asks outright whether they fund only organizations they select themselves -- 78% say yes, and that one answer is what lets the rest of this site tell you which foundations are worth approaching. Grantmaking charities like this one file a regular Form 990 instead, and the IRS never puts the question to them. Anyone claiming to know the answer from the filing is inventing it.
Three things in the filing do bear on it:
- What kind of organization it is. The IRS has no activity classification on file for this one, so we cannot tell you whether it is a community foundation or a single-institution support fund. The recipient list below is the better guide.
- How spread out its giving is. 36 distinct organizations, with 36% of the dollars going to the largest single recipient. That is genuinely spread out -- the mark of a funder making many independent decisions rather than underwriting one institution.
- How much its list changes. 26% of one year's grantees are funded again the next, across 4 year-to-year transitions. That is below the 56% median for grantmaking charities, and well below the 67% median for private foundations. It describes the organizations it already funds, not whether it would consider a new one.
How big are its grants?
The median reported grant is $25,000. Half of what it reported fell between $12,500 and $100,000; the smallest was $8,500 and the largest $362,500. If you are asking for materially more than the top of that range, you are asking the wrong organization.
Every organization it funded
This is the complete list from its filings, largest first. Recipients are grouped by the EIN the filer reported, not by name, so an organization that was typed differently in two years appears once rather than twice.
| Organization | Location | Total received | Grants | Years funded | Last |
|---|---|---|---|---|---|
| American Cancer Society Inc | Atlanta, GA | $1,100,000 | 4 | 4 | 2025 |
| Melanoma Research Alliance Foundation | Washington, DC | $240,000 | 2 | 2 | 2024 |
| University of Texas Foundation | Austin, TX | $125,000 | 2 | 1 | 2021 |
| Washington University | St Louis, MO | $125,000 | 2 | 2 | 2025 |
| Emory University | Atlanta, GA | $112,500 | 1 | 1 | 2021 |
| University of California San Francisco | San Francisco, CA | $112,500 | 1 | 1 | 2021 |
| Icahn School of Medicine at Mount Sinai | New York, NY | $104,040 | 1 | 1 | 2023 |
| UC Healthcare System | Cincinnati, OH | $104,040 | 1 | 1 | 2023 |
| The Feinstein Institute for Medical Research | Westbury, NY | $101,040 | 1 | 1 | 2024 |
| Institute for Cancer Research | Philadelphia, PA | $100,000 | 1 | 1 | 2023 |
| Memorial Sloan-Kettering Cancer Center | New York, NY | $100,000 | 3 | 3 | 2025 |
| American Association of Physicists in Medicine | Alexandria, VA | $75,000 | 2 | 2 | 2025 |
| Nrg Oncology Foundation Inc | Pittsburgh, PA | $75,000 | 3 | 3 | 2025 |
| Speed of Light- the Astro Foun | Arlington, VA | $62,250 | 4 | 4 | 2024 |
| Duke University | Durham, NC | $50,000 | 2 | 2 | 2024 |
| Mass General Brigham Incorporated | Somerville, MA | $50,000 | 1 | 1 | 2025 |
| University Hospitals Health System Inc | Shaker Hts, OH | $50,000 | 1 | 1 | 2023 |
| Lungevity Foundation | Chicago, IL | $37,500 | 2 | 2 | 2025 |
| The Board of Trustees of the Leland Stanford Junior University | Stanford, CA | $37,500 | 2 | 2 | 2024 |
| University of Texas MD Anderson Cancer Center | Houston, TX | $37,500 | 2 | 2 | 2023 |
| Dana-Farber Cancer Institute | Boston, MA | $25,000 | 1 | 1 | 2021 |
| Johns Hopkins University | Baltimore, MD | $25,000 | 2 | 2 | 2023 |
| Mass General Brigham Incorporated | Somerville, MA | $25,000 | 1 | 1 | 2022 |
| Yale University | New Haven, CT | $25,000 | 1 | 1 | 2024 |
| Breast Cancer Angels | Huntingtn Bch, CA | $12,500 | 1 | 1 | 2023 |
| Cancer Support Community Los Angeles | Los Angeles, CA | $12,500 | 1 | 1 | 2023 |
| Carter S Foundation Inc | Riverside, CA | $12,500 | 1 | 1 | 2025 |
| City of Hope | Duarte, CA | $12,500 | 1 | 1 | 2024 |
| Latinas Contra Cancer | San Jose, CA | $12,500 | 1 | 1 | 2025 |
| Smith Farm Ltd | Washington, DC | $12,500 | 1 | 1 | 2024 |
| TOUCH4LIFE Inc | Clarksville, MD | $12,500 | 1 | 1 | 2024 |
| Breast Cancer Resource Center | Austin, TX | $10,000 | 1 | 1 | 2022 |
| Jennifer S Fallick Cancer Support Center | Homewood, IL | $10,000 | 1 | 1 | 2021 |
| Northwestern Memorial Healthcare | Chicago, IL | $10,000 | 1 | 1 | 2021 |
| Thrivewell Cancer Foundation | San Antonio, TX | $10,000 | 1 | 1 | 2022 |
| Joybound People and Pets Fka Tony Larussas Animal Rescue Foundation | Walnut Creek, CA | $8,500 | 1 | 1 | 2025 |
12 of 36 (33%) received money in more than one year over the 5 years we hold. Remember the $5,000 floor: an organization funded every year at $3,000 shows up here as never funded at all.
What the money was for
Taken verbatim from the purpose column of its filings, largest first. This is the closest thing to a statement of what it funds, in its own words.
- American Cancer Society Inc
ASTRO-ACS CLINICIAN SCIENTIST DEVELOPMENT GRANT - The Regents of the University of California San Francisco
2021 ASTRO-PC CAREER DEVELOPMENT AWARD TO END PROSTATE CANCER - Emory University
2021 ASTRO-MRA YOUNG INVESTIGATOR AWARD IN RADIATION ONCOLOGY - The University of Texas MD Anderson Cancer Center
2021 ASTRO-BCRF CAREER DEVELOPMENT AWARD TO END BREAST CANCER - Dana-Farber Cancer Institute
2021 ASTRO RESIDENTS/FELLOW IN RADIATION ONCOLOGY BIOLOGY SEED GRANT - John Hopkins University School of Medicine
2021 ASTRO-AAPM PHYSICS RESIDENTS/POSTDOCTORAL FELLOWS SEED GRANT
What kind of organizations it funds
By the activity category the IRS assigns each recipient, for the 33 of 36 recipients we could match to a registered organization. The categories are the IRS's, not ours -- Schedule I reports the recipient's EIN, so this is a lookup rather than a name match.
Giving by year
| Tax year | Grants reported | Total | Median grant |
|---|---|---|---|
| 2021 | 9 | $420,185 | $25,000 |
| 2022 | 9 | $379,083 | $25,000 |
| 2023 | 15 | $834,099 | $25,000 |
| 2024 | 12 | $705,503 | $25,000 |
| 2025 | 10 | $696,000 | $37,500 |
Tax years, not calendar years, and the most recent year is usually incomplete -- Form 990 arrives about a year after the year it covers, so a low final year means late paperwork rather than a grantmaker winding down.
Where its money goes
40% of its giving went to organizations in Georgia. Community foundations and federated funds are usually the most geographically bounded funders there are -- being outside the footprint is normally disqualifying in a way that a weak programme fit is not.
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Funders that support the same organizations
These grantmakers and private foundations gave to organizations this one also funded. Shared grantees are a sign of overlapping priorities and nothing more: they do not show that any of these funders would consider a new organization. Each page says what its filings show.
How to approach this grantmaker
- Look for a published programme first. Unlike most private foundations, organizations of this kind often do run open, deadlined grant cycles with written guidelines. Its own website is the authority on that; this page is the authority on who it has actually paid.
- Check you are its size. The median reported grant is $25,000 -- and because grants under $5,000 need not be reported, it very likely writes smaller cheques than this page can see.
- Check you are in its geography. Its giving concentrates in Georgia.
- Read the recipient list for organizations like yours. If nothing on it resembles your work, that is a real answer and a cheap one to get.
Related guides
Where these numbers come from
Everything above is taken from American Society for Radiation Oncology's own Form 990 Schedule I filings, which the IRS publishes in bulk. We used 5 returns (tax years 2021-2025). Grant figures are from its returns. Recipient classifications, the concentration and retention figures and the funders that support the same organizations are our own calculations from them, described in how we build this.
On its most recent return it told the IRS it made grants to 10 section 501(c)(3) organizations and 0 other organizations. That is the filer's own count for one year; the totals above cover every year we hold.
Address of record on the latest return: 251 18TH St South 8TH Floor, Arlington, VA, 22202.
EIN 42-0943164 · See the original filings on ProPublica · How we build this
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