Gammaplex
Payments companies reported to CMS as associated with Gammaplex. "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 Gammaplex, 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 Gammaplex
These are the largest totals companies reported as associated with Gammaplex. 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) |
|---|---|---|---|
| Brian Branchford | Milwaukee, WI | Pediatric Hematology-Oncology | $11,221.61 |
| Terry Gernsheimer | Seattle, WA | Hematology (Internal Medicine) | $5,500.00 |
| Aneel Ashrani | Rochester, MN | Hematology (Internal Medicine) | $5,250.47 |
| Anita Dsouza | Milwaukee, WI | Hematology & Oncology | $5,053.96 |
| Sascha Tuchman | Durham, NC | Hematology (Internal Medicine) | $5,049.27 |
| Tibor Kovacsovics | Portland, OR | Hematology & Oncology | $4,957.90 |
| Gurbakhash Kaur | New York, NY | Medical Oncology | $4,630.47 |
| Gregory Toci | Marlton, NJ | Allergy | $4,237.66 |
| Tuan Vu | Tampa, FL | Neurology (Psychiatry & Neurology) | $4,054.71 |
| Stuart Epstein | Beverly Hills, CA | Allergy | $178.02 |
Prescribed Gammaplex?
See what its makers reported for your doctor. Two steps, private, no account.
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.