Christos Fountzilas, M.D.
NPI 1558672105ActiveIndividual· Internal Medicine, Medical Oncology· Buffalo, NY
Internal Medicine, Medical Oncology (M.D.) with Roswell Park Cancer Institute, practicing in Buffalo, New York. Their prescriptions cost Medicare Part D more than their services did: $635,863 for 249 claims, against $20,663 paid for services in 2024. Sirtex Medical Inc reported $34.12 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1558672105 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 29, 2010 |
| Last updated in NPPES | Jul 15, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 287267 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Medical Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 81 |
|---|---|
| Services billed | 272 across 11 procedure codes |
| Paid by Medicare | $20,663 |
Part D prescriptions in 2024
| Prescriptions (claims) | 249 · 260 30-day fills |
|---|---|
| Patients | 82 |
| Total drug cost | $635,863 |
| Generic share | 71% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Roswell Park Cancer InstituteBuffalo, NY · 488 clinicians
Industry payments (Open Payments)
- 2025$34.12 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sirtex Medical Inc | $34.12 | 1 |
What the 2025 payments were for
- Food and Beverage$34.12 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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