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Proton Therapy Center LLC

EIN 27-3064209 · Knoxville, TN

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthNot ratedToo small or too little detailGovernanceStrong91 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

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.

Income
$26,750
Spending
$5,113
Reserves
36.8 months of spending
Largest source of income
other income, 100%
Employees
0
Volunteers
0

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

We do not score finances when yearly spending is very small or the return has too little detail. The ratios stop meaning much at that size.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Strong: 91 out of 100. Higher than 76% of charities in its peer group (health care, under $250k).

  • Independent board

    18 of 25

    3 of 3 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    8 of 8

    Has a written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    10 of 10

    Gave the board a copy of this return before filing it.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (1)
  1. 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.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated October 13, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since June 2012.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 21, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.