PROTON THERAPY CENTER LLC

As filed

Subsection

03

NTEE code

E24

Classification

1000

Street

6450 PROVISION CARES WAY

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Other organizations at this address

1 other organization in the IRS Business Master File lists the same street address. matched by us

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

• EAST TENNESSEE RADIATION THERAPY SERVICES LLC

  EIN 37-1665132

Mission and programs · 2025

• 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.

As filed on the 2025 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

• 2025

  Revenue

  $26,750

  Expenses

  $5,113

  Contributions

  $0

  Grants paid

  $0

• 2024

  Revenue

  $98,273,389

  Expenses

  $10,594

  Contributions

  $0

  Grants paid

  $0

• 2023

  Revenue

  $0

  Expenses

  $7,545,084

  Contributions

  $0

  Grants paid

  $0

• 2022

  Revenue

  -$17,887,682

  Expenses

  $21,606,697

  Contributions

  $0

  Grants paid

  $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

• 2021 · 990

  Revenue

  $20,990,797

  Expenses

  $31,442,549

  Assets (EOY)

  $87,350,051

• 2020 · 990

  Revenue

  $22,840,271

  Expenses

  $30,910,272

  Assets (EOY)

  $90,724,481

• 2019 · 990

  Revenue

  $28,559,377

  Expenses

  $31,145,700

  Assets (EOY)

  $95,713,271

• 2018 · 990

  Revenue

  $27,541,772

  Expenses

  $30,434,601

  Assets (EOY)

  $99,282,153

• 2017 · 990

  Revenue

  $28,419,914

  Expenses

  $30,029,364

  Assets (EOY)

  $103,951,258

• 2016 · 990

  Revenue

  $28,473,127

  Expenses

  $30,092,665

  Assets (EOY)

  $106,522,373

• 2015 · 990

  Revenue

  $28,663,962

  Expenses

  $29,906,710

  Assets (EOY)

  $111,743,470

• 2014 · 990

  Revenue

  $15,407,290

  Expenses

  $28,121,717

  Assets (EOY)

  $110,848,624

• 2013 · 990

  Revenue

  $445,843

  Expenses

  $6,586,993

  Assets (EOY)

  $94,726,673

• 2012 · 990

  Revenue

  — not reported

  Expenses

  $1,531,614

  Assets (EOY)

  $65,887,371

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Other IRS files