Igor Puzanov, MD
NPI 1700892502ActiveIndividual· Internal Medicine, Hematology & Oncology· Buffalo, NY
Internal Medicine, Hematology & Oncology (MD) with Roswell Park Cancer Institute, practicing in Buffalo, New York. Mostly services rather than prescriptions: Medicare paid $6,178 for 36 patients in 2024, with only 26 Part D claims. E.R. Squibb & Sons, L.L.C. was the largest of 4 companies reporting payments in 2025, $5,981 in all, mostly consulting fees.
Overview
| NPI | 1700892502 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 1, 2006 |
| Last updated in NPPES | Mar 7, 2023 |
| Certified by provider | Feb 5, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 286657 | NY |
| Internal Medicine, Hematology & Oncology | 207RH0003X | MD36311 | TN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 36 |
|---|---|
| Services billed | 66 across 6 procedure codes |
| Paid by Medicare | $6,178 |
Part D prescriptions in 2024
| Prescriptions (claims) | 26 · 28 30-day fills |
|---|---|
| Total drug cost | $374.50 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Medical Oncology |
Medical group
- Roswell Park Cancer InstituteBuffalo, NY · 488 clinicians
Industry payments (Open Payments)
- 2025$5,981 · 6 payments from 4 companies
- 2024$2,780 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $2,914 | 2 |
| Apellis Pharmaceuticals, Inc. | $2,763 | 1 |
| Merck Sharp & Dohme LLC | $202.21 | 2 |
| Regeneron Pharmaceuticals, Inc. | $101.91 | 1 |
What the 2025 payments were for
- Consulting Fee$5,628 · 2 payments
- Food and Beverage$353.47 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Buffalo
- 1225072648
- 1225528649
- 1265744643
- 1326369562
- 1346586765
- 1386625598
- 1477745115
- 1487060489
- 1558895532
- 1568405868
- 1639143795
- 1730533779
All 29 hematologist-oncologists in Buffalo · All hematologist-oncologists in New York