Virginia · Nonprofit
AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE
AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE (Virginia) receives grants from 8 organizations whose IRS filings report $1,328,859 to it, the largest being University of Chicago ($473,552). 6 of them have funded it in more than one year.
- Revenue FY2024
- $12M
- Funders on record
- 8
- Grants received
- $1.3M
- Net assets
- $23M
What American Association of Physicists in Medicine does
Mission
Advancing medicine through excellence in the science, education and professional practice of medical physics. The mission is carried out through driving scientific and clinical innovation in medical physics to improve human health, enhancing the value of aapm membership experience and services, promoting the leadership role of the organization and its members, cultivating excellence in medical physics education, practicing stewardship in continuous assessment fo programs and services, improving communication internally and externally, ensuring high quality patient care and championing equity diversity and including in the field of medical physics.
As stated on its FY2024 Form 990.
Programs
"council and committee activities - the council and committee structure has direct oversight of all research, education and professional program activities. A science council directs all research funding activities and produces scientific and technical reports discussing theongoing research in medical physics. The science council contributes to the program of the annual meeting. The education council has responsibility for developing and monitoring all continuing education programs for the association. The professional council maintains a focus on the clinical practice of medical physics and helps to develop practice and other recommended guidelines for medical physicists to use in their clinical work. The councils oversee the major awards and grants given by aapm."
$3,658,296 spentof which $718,816 as grants$2,502,149 earned by the program35% of program spendingEducation and professional development - a scientific meeting is held annually to enable members to present the results of their latest research. In 2024 this meeting was held in-person and virtually. There were nearly 3000 participants and approximately 2200 preferred submissions. The program also drew over 109 exhibitors who presented their latest products and services to participants in-person and virtually. Sessions are segregated by professional interest and include imaging physics, therapy physics and professional issues and practices, in addition a spring clinical meeting is held devoted to the clinical issues facing medical physicists. A single-topic summer school is presented annually, and number of other special topic conferences are held throughout the year. To meet the educational and professional development needs of our members an increasing number of webinar programs were offered throughout the year as well.
$3,165,629 spent$2,165,182 earned by the program30% of program spendingPublications - aapm publishes the premier scientific, peer-reviewed journal in the field. Entitled ""journal of medical physics"", the journal publishes the results of scientific research in the field. Effective january 2024, journal of medical physics transitioned to an online-only publication. After nearly 50 years of print circulation, all issues are now published exclusively in digital format. This change relfects the journal's commitment to sustainbility accessibility and modern publishing practices. Likewise, in 2012, the aapm began publishing 'the journal of applied clinical medical physics' dealing exclusively with the clinical practice of medical physics. This journal is also peer reviewed and is offered free of charge worldwide.
$3,668,069 spent$939,916 earned by the program35% of program spending
The 3 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $10,491,994.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $32M to $28M (−11%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2021 6%. Grants only. Government contracts and fees sit inside program revenue.
32% of AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE’s revenue is contributions — about as donation-reliant as the typical peer (52% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 8 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
C David Gammel
Executive director
Board chair
Ehsan Samei
Chair of the board
As listed on its FY2024 Form 990.
The chief executive listed changed between the FY2023 and FY2024 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 5 funders, grant income rose $35k → $176k.
2 of 8 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 8% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE leans on a few funders — its largest provides 36% of grant income and the top three 83%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
100% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE.
Largest funder’s share by year: 2017 100% · 2019 76% · 2020 99% · 2021 46% · 2022 46% · 2023 40% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
60% of AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE's funders are still giving 3 years after their first grant; 75% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE draws 91% of its grant income from funders outside Virginia, across 3 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $106k arriving through sponsors registered in 2 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE's funding base is broadening — from 1 funders to 5 as grant income climbed.
this organization peer median middle 50% of peers· 149 science & tech nonprofits $10M–$100M, FY2024
Organizations like AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Virginia
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
81% of spending goes to programs.
Governance
Public support
78%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE?
- AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE (Virginia) receives grants from 8 organizations whose IRS filings report $1,328,859 to it, the largest being University of Chicago ($473,552). 6 of them have funded it in more than one year.
- How many funders does AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE have?
- IRS filings report 8 organizations giving $1,328,859 in grants to AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE, 6 of which have funded it in more than one year.
- Who is the largest funder of AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE?
- University of Chicago is the largest funder on record, with $473,552 in grants. The full list of funders is on this page.
- How can an organization like AMERICAN ASSOCIATION OF PHYSICISTS IN MEDICINE find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Virginia. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 8 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing