Barrigel
Payments companies reported to CMS as associated with Barrigel. "Associated with" is CMS's wording: it links a payment to a product without saying the money was spent on it.
By year
Payments reported as associated with Barrigel, per program year, as reported to CMS.
Who makes it
Specialties most often involved
Where the associated payments went, by the receiving clinician's specialty.
Clinicians most associated with Barrigel
These are the largest totals companies reported as associated with Barrigel. They are typically speaking or consulting arrangements, which companies must report by law; appearing here is not evidence of anything improper.
| Clinician | Location | Specialty | Associated payments (2023-2025) |
|---|---|---|---|
| Peter Orio | Boston, MA | Radiation Oncology | $446,336.78 |
| Michael Greenberg | Cherry Hill, NJ | Radiation Oncology | $183,613.63 |
| Varun Sundaram | Austin, TX | Urology | $173,438.32 |
| Zachary Klaassen | Augusta, GA | Surgery | $157,184.13 |
| Daniel Kim | Fairfax, VA | Radiation Oncology | $127,756.43 |
| Daniel Welchons | New Hartford, NY | Urology | $72,544.87 |
| Akash Nanda | Orlando, FL | Radiation Oncology | $56,062.15 |
| Rizwan Nurani | Apple Valley, CA | Radiation Oncology | $46,781.83 |
| Olubayo Tojuola | Orlando, FL | Urology | $43,542.98 |
| Christopher West | Gainesville, FL | Urology | $43,490.47 |
Prescribed Barrigel?
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.