Merck Healthcare Kgaa
Reporting payments is a legal requirement; large totals often reflect large product portfolios.
$409Kgeneral payments (2019-2025)
$34Kresearch payments (2019-2025)
128clinicians 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.
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) |
|---|---|---|---|
| Donald Negroski | Sarasota, FL | Neurology (Psychiatry & Neurology) | $30,315.00 |
| David Benjamin | Newport Beach, CA | Hematology & Oncology | $27,436.21 |
| Kurt Barnhart | Philadelphia, PA | Reproductive Endocrinology | $23,441.09 |
| Andrew Solomon | Burlington, VT | Neurology (Psychiatry & Neurology) | $22,795.94 |
| Jacqueline Nicholas | Columbus, OH | Neurology (Psychiatry & Neurology) | $21,295.18 |
| Ian Krop | New Haven, CT | Medical Oncology | $20,199.56 |
| Heidi Crayton | Vienna, VA | Neurology (Psychiatry & Neurology) | $19,459.46 |
| Jai Perumal | New York, NY | Neuromusculoskeletal Medicine, Sports Medicine | $17,411.82 |
| Patricia Lo Russo | Detroit, MI | Medical Oncology | $17,220.67 |
| Susana Campos | Boston, MA | Medical Oncology | $17,066.50 |
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.