The Oklahoma Proton Center, LLC
- Les FoutTreasurer · Form 990
- Yi LeDirector of Physics · Form 990
- Randall JohnsonDosimetry Manager · Form 990
- Anna StidhamRadiologist · Form 990
- Thanh NguyenPhysicist · Form 990
How we got $34.4M
Based on IRS Form 990 (2025).
Employees over time
▲ 46% since 2020Show as table
| Year | Source | Employees | Est. revenue |
|---|---|---|---|
| 2020 | PPP loan | 37 | $8.2M |
| 2020 | Form 5500 | 38 | $8.4M |
| 2021 | Form 5500 | 47 | $10.4M |
| 2022 | Form 5500 | 51 | $11.3M |
| 2023 | Form 5500 | 63 | $14.0M |
| 2024 | Form 5500 | 54 | $12.0M |
Participants are employees in the company's retirement plan at year end, from its Form 5500 filing with the Department of Labor. They usually run a little under total headcount (part-timers and new hires may not be eligible). Revenue and EBITDA apply this industry's revenue per employee and margin to each year's count.
What we know
What they do
The Oklahoma Proton Center provides proton therapy, a form of radiation treatment, for cancer patients. It offers tailored treatment plans and additional services such as screening and telehealth.
From the company's website. Industry: Doctors & clinics.
Compared with similar businesses nearby
| Business | Est. revenue | Distance |
|---|---|---|
| THE OKLAHOMA PROTON CENTER, LLC this business | $34.4M | — |
| Romeo Mandanas, M.D. Oklahoma City | $1.5M | 0.0 mi |
| Agnel Raparthi, MD Oklahoma City | $1.5M | 0.0 mi |
| Juli Johnson, APRN Oklahoma City | $1.5M | 0.0 mi |
| Brian Geister, MD Oklahoma City | $1.5M | 0.0 mi |
| Jennifer Lee, APRN-CNP Oklahoma City | $1.5M | 0.0 mi |
| Tyler Gutschenritter MD Oklahoma City | $1.5M | 0.0 mi |
The full calculation
Figures are shown toward the upper part of their range rather than at its middle.
Brought up to date assuming revenue has grown 8% a year since 2020, when the PPP figures were reported; included above.
These are the business's own reported figures, from its IRS Form 990 filing, not an estimate. EBITDA applies the industry margin to reported revenue.
| Revenue range | $32.7M – $36.1M |
| EBITDA range | $4.8M – $5.3M |
| Industry (NAICS) | Offices of Physicians (except Mental Health Specialists) (621111) |
EBITDA margin: from IRS tax returns of S corporations in this industry (2019–2022), adjusted for company size: smaller companies typically run higher margins. EBITDA here is after owners' salaries.
Benchmarks: US Economic Census 2022, OK. PPP loans were sized on 2019–2020 payroll, so figures reflect that period. These are statistical estimates, not reported financials. Full methodology
History & advisors
Advisors
- AccountingElliott Advisory Group PLLCPrepared its Form 990
- BankingArvest BankPPP / SBA lender
From the company's own website and public filings (DOL Form 5500, IRS Form 990, SBA). Roles are as stated there and may be out of date.
Banking relationships
| Arvest Bank PPP 2020 | All 5,114 borrowers → |
From PPP and SBA loan records, which name the bank but not the individual banker.
PPP loans
| Approved | Draw | Amount | Jobs |
|---|---|---|---|
| 4/6/2020 | first | $728K | 37 |
Public records
Matched to this business by name and address from public government data; a match can occasionally be wrong.
About The Oklahoma Proton Center, LLC
The Oklahoma Proton Center, LLC is a doctors & clinics company in Oklahoma City, Oklahoma, in business since 2018. It is owned by Dr. Jon Axton (Part Owner). Its reported annual revenue is about $34.4M, with roughly $5.0M of EBITDA. It has about 54 employees.
Common questions
- Who owns The Oklahoma Proton Center, LLC?
- The Oklahoma Proton Center, LLC is owned by Dr. Jon Axton (Part Owner), according to public sources such as the company's website or filings.
- How much revenue does The Oklahoma Proton Center, LLC make?
- The Oklahoma Proton Center, LLC reported revenue of about $34.4M.
- How many employees does The Oklahoma Proton Center, LLC have?
- About 54, from its 2024 retirement-plan filing.
- When was The Oklahoma Proton Center, LLC founded?
- The Oklahoma Proton Center, LLC has been in business since 2018.