Les Zakrzewski, MD
NPI 1467431577ActiveIndividual· Internal Medicine· West Seneca, NY
Internal Medicine (MD) with Trinity Medical Wny PC, practicing in West Seneca, New York. Their prescriptions cost Medicare Part D more than their services did: $994,637 for 7,953 claims, against $23,183 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 3 companies reporting payments in 2025, $541.76 in all, mostly food and beverage. Lists Mercy Hospital of Buffalo and 1 other hospital as hospital affiliations.
Overview
| NPI | 1467431577 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 17, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 154880-1 | NY |
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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 77 |
|---|---|
| Services billed | 359 across 26 procedure codes |
| Paid by Medicare | $23,183 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,953 · 20,479 30-day fills |
|---|---|
| Patients | 374 |
| Total drug cost | $994,637 |
| Generic share | 86% of claims |
Education and affiliations
| Medicare specialty | Internal Medicine |
|---|
Medical group
- Trinity Medical Wny PCBuffalo, NY · 207 clinicians
Hospital affiliations
- Mercy Hospital of BuffaloBuffalo, NY
- Sisters of Charity HospitalBuffalo, NY
Industry payments (Open Payments)
- 2025$541.76 · 21 payments from 3 companies
- 2024$469.26 · 20 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $344.83 | 16 |
| Novo Nordisk Inc | $163.40 | 3 |
| Lilly USA, LLC | $33.53 | 2 |
What the 2025 payments were for
- Food and Beverage$541.76 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 25 internal medicine physicians in West Seneca · All internal medicine physicians in New York