Tennessee · Nonprofit
THE PROTON THERAPY CENTER LLC
THE PROTON THERAPY CENTER LLC (Tennessee) receives grants from 3 organizations whose IRS filings report $1,959,000 to it, the largest being Provision Foundation Inc ($1,200,000). 0 of them have funded it in more than one year.
- Revenue FY2024
- $98M
- Funders on record
- 3
- Grants received
- $2.0M
- Net assets
- $19k
What The Proton Therapy Center LLC does
Mission
The organization operates a proton therapy cancer treatment center in knoxville, tennessee, and services a multi-state area in the southeastern united states. Proton therapy is the cutting edge of radiation cancer treatment. It is an advanced form of radiation that allows for precision treatment that leaves surrounding tissue unharmed and reduces side effects.proton therapy center's goal is to help make proton treatment options available for as many patients as possible. Our 90,000 sq. Foot facility and the surrounding dowell springs campus provide a nurturing oasis for patients as they receive treatment.with a wealth of resources, comprehensive care and knowledgeable specialists with years of experience, proton therapy center serves as an ideal option for patients in need of cancer treatment.
As stated on its FY2024 Form 990.
Program
The organization operated a proton therapy center in knoxville, tennessee, and services a multi-state area in the southeastern united states. The organization provided comprehensive cancer treatment utilizing the latest and most advanced treatment options available. The proton therapy center team is comprised of leading specialists, clinicians and experts with more than 50 years of physician and imaging oncology experience, and they are passionate about providing effective and personal care to each patient served. The organization went through a bankruptcy foreclosure and is in the process of dissolving.
The program described on its FY2025 Form 990.
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 $87M to $24M (−73%).
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 5%. Grants only. Government contracts and fees sit inside program revenue.
0% of THE PROTON THERAPY CENTER LLC’s revenue is contributions — more earned-revenue than three-quarters of its peers (7% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 7 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.
Board chair
Terry Douglass
Director/chairman
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2019: the base broadened from 1 funder to 2 funders, grant income fell $1.2M → $759k.
From the IRS filings of THE PROTON THERAPY CENTER LLC’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
THE PROTON THERAPY CENTER LLC leans on a few funders — its largest provides 61% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder 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 THE PROTON THERAPY CENTER LLC.
Largest funder’s share by year: 2017 100% · 2019 99% — broadly stable.
“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.
Where its funders are
100% of THE PROTON THERAPY CENTER LLC's grant income comes from Tennessee funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. 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
THE PROTON THERAPY CENTER LLC holds deeper cash reserves than three-quarters of the 4,580 health nonprofits its size.
this organization peer median middle 50% of peers· 4,580 health nonprofits $10M–$100M, FY2024
Government funding THE PROTON THERAPY CENTER LLC receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $247k on record — $247k federal, $224 state.
- National Aeronautics and Space Administration$215k
- Department of Justice$33k
- NJ$210
- FL$14
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like THE PROTON THERAPY CENTER LLC
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 Tennessee
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
49% of spending goes to programs.
Governance
Footprint & structure
Part of a family of 6 related entities
- Provision Trust Inc · exempt
- East Tennessee Radiation Therapy Services LLC · exempt
- Mtpc LLC · exempt
- Pcpt Lenexa LLC · exempt
- Pcpt Hamlin LLC · exempt
Screen this organization
A dated, signed PDF of the compliance screen for THE PROTON THERAPY CENTER LLC: 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 THE PROTON THERAPY CENTER LLC?
- THE PROTON THERAPY CENTER LLC (Tennessee) receives grants from 3 organizations whose IRS filings report $1,959,000 to it, the largest being Provision Foundation Inc ($1,200,000). 0 of them have funded it in more than one year.
- How many funders does THE PROTON THERAPY CENTER LLC have?
- IRS filings report 3 organizations giving $1,959,000 in grants to THE PROTON THERAPY CENTER LLC.
- Who is the largest funder of THE PROTON THERAPY CENTER LLC?
- Provision Foundation Inc is the largest funder on record, with $1,200,000 in grants. The full list of funders is on this page.
- How can an organization like THE PROTON THERAPY CENTER LLC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Tennessee. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Proton Therapy Center LLC →
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 3 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