Vifor (International) Ltd.
Reporting payments is a legal requirement; large totals often reflect large product portfolios.
$929Kgeneral payments (2019-2025)
$1.0Mresearch payments (2019-2025)
212clinicians paid
General and research payments are shown separately, never blended. Research payments are often institution-directed and tied to clinical trials.
General payments by year
General payments only, as reported to CMS. Research payments are totaled above and not included in these bars.
Products most associated with its payments
Specialties it works with most
Clinicians with the largest reported totals
Often long-running consulting, speaking, or advisory relationships, which companies must report by law. A large total is not evidence of anything improper.
| Clinician | Location | Specialty | General payments (2019-2025) |
|---|---|---|---|
| Javed Butler | Jackson, MS | Advanced Heart Failure and Transplant Cardiology | $363,090.11 |
| Bertram Pitt | Ann Arbor, MI | Cardiovascular Disease | $102,872.46 |
| Matthew Weir | Baltimore, MD | Nephrology (Internal Medicine) | $47,850.01 |
| Tomas Ganz | Los Angeles, CA | Pulmonary Disease | $37,343.45 |
| Stephen Greene | Durham, NC | Advanced Heart Failure and Transplant Cardiology | $35,708.12 |
| Malcolm Munro | Los Angeles, CA | Obstetrics & Gynecology | $33,204.10 |
| Ellie Kelepouris | Philadelphia, PA | Nephrology (Internal Medicine) | $26,656.50 |
| Andrew Artz | Duarte, CA | Hematology (Internal Medicine) | $26,328.89 |
| Bernard Chaitman | St Louis, MO | Cardiovascular Disease | $22,473.51 |
| Mikhail Kosiborod | Kansas City, MO | Cardiovascular Disease | $20,288.71 |
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.