Public Charity

THE PROTON THERAPY CENTER LLC

THE PROTON THERAPY CENTER LLC, of KNOXVILLE, TN, is a Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $27K in revenue, $5K in expenses, $16K in total assets. 2 publicly reported grants to this organization, totaling roughly $759K, appear in IRS filings.

EIN: 273064209 KNOXVILLE, TN Specialty Hospitals NTEE: E24 Latest filing: 2025
Total Revenue$27K
Total Expenses$5K
Total Assets$16K
Grant Records2
Funding Total$759K
Filing Years2021–2025

Mission

THE ORGANIZATION OPERATED 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.THE ORGANIZATION WENT THROUGH A BANKRUPTCY FORECLOSURE AND IS IN THE PROCESS OF DISSOLVING.

Where $100 goes at The Proton Therapy Center LLC

How The Proton Therapy Center LLC divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.

$90 Programs the work itself
$10 Management running the organization
$0 Fundraising none reported

No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.

Inside the $90 for programs

$90
The organization operated a proton therapy center in Knoxville, tennessee, and services a multi-state area in the southeastern united states
All program spending
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Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.

Officers & Directors

DIRECTOR James Blankemeyer
FORMER PRESIDENT Mary Lou Dubois
DIRECTOR Scott Hamilton
DIRECTOR/CHAIRMAN Terry Douglass

Officer compensation and complete director data available with membership.

Top Grant Purposes

Health & Medicine
$750,000 1 grant
General Support
$9,000 1 grant

Financial Trends

Year Revenue Expenses Assets
2025 $27K $5K $16K
2024 $98.3M $11K $19K
2023 — $7.5M $22.1M
2022 $-17.9M $21.6M $23.7M
2021 $21.0M $31.4M $87.4M

Between 2021 and 2025, reported annual revenue declined from $21.0M to $27K (-100%), with total assets most recently reported at $16K.

Interactive year-over-year charts and full filing details available with membership.

See the full picture for THE PROTON THERAPY CENTER LLC

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