Mark D. Chazen, M.D.
NPI 1518931989ActiveIndividual· Urology· Cheektowaga, NY
Urology (M.D.) in Cheektowaga, New York, trained at University of Rochester School of Medicine and Dentistry (class of 1997). In 2024 Medicare paid $172,963 for 582 patients, and Part D covered 1,121 of their prescriptions, 81% of them generic. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $303.68 in all, mostly food and beverage.
Overview
| NPI | 1518931989 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 14, 2006 |
| Last updated in NPPES | Mar 1, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | 191098-1 | NY |
| Urology | 208800000X | 191098 | 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 - Urology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 582 |
|---|---|
| Services billed | 5,380 across 73 procedure codes |
| Paid by Medicare | $172,963 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,121 · 2,026 30-day fills |
|---|---|
| Patients | 456 |
| Total drug cost | $184,751 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of Rochester School of Medicine and Dentistry |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Urology |
Medical groups
- Erie County Medical Center CorporationBuffalo, NY · 319 clinicians
- Great Lakes Physician PCCheektowaga, NY · 66 clinicians
Hospital affiliations
- Bertrand Chaffee HospitalSpringville, NY
- Erie County Medical CenterBuffalo, NY
- Kaleida HealthBuffalo, NY
- Olean General HospitalOlean, NY
- Sisters of Charity HospitalBuffalo, NY
Industry payments (Open Payments)
- 2025$303.68 · 13 payments from 4 companies
- 2024$428.25 · 20 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $151.73 | 6 |
| Sumitomo Pharma America, Inc. | $109.42 | 5 |
| Novo Nordisk Inc | $25.19 | 1 |
| Teleflex LLC | $17.34 | 1 |
What the 2025 payments were for
- Food and Beverage$303.68 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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