Vonvendi
Payments companies reported to CMS as associated with Vonvendi. "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 Vonvendi, 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 Vonvendi
These are the largest totals companies reported as associated with Vonvendi. 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) |
|---|---|---|---|
| Jonathan Roberts | Peoria, IL | Pediatrics | $28,996.25 |
| Nathan Connell | Boston, MA | Hematology (Internal Medicine) | $9,881.37 |
| Maissaa Janbain | New Orleans, LA | Hematology & Oncology | $9,333.88 |
| Homa Ahmadzia | Washington, DC | Maternal & Fetal Medicine | $8,323.86 |
| Tammuella Chrisentery-Singleton | New Orleans, LA | Pediatric Hematology-Oncology | $2,250.50 |
| Lynn Malec | Milwaukee, WI | Pediatric Hematology-Oncology | $2,007.50 |
| Angela Weyand | Ann Arbor, MI | Pediatric Hematology-Oncology | $2,007.50 |
| Ronald Krall | Steamboat Springs, CO | Neurology (Psychiatry & Neurology) | $1,800.00 |
| Mark Reding | Minneapolis, MN | Hematology & Oncology | $1,400.00 |
| Ryan Summers | Cleveland, OH | Pediatrics (Nurse Practitioner) | $190.55 |
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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.