Alexander Boris Gelfer, MD.
NPI 1689638462ActiveIndividual· Internal Medicine, Pulmonary Disease· Williamsville, NY
Internal Medicine, Pulmonary Disease (MD.) with Sisters of Charity Hospital of Buffalo New York and 1 other group, practicing in Williamsville, New York. Their prescriptions cost Medicare Part D more than their services did: $1,563,596 for 1,913 claims, against $22,349 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 21 companies reporting payments in 2025, $3,275 in all, mostly food and beverage. Lists Sisters of Charity Hospital as a hospital affiliation.
Overview
| NPI | 1689638462 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD. |
| Sole proprietor | No |
| NPI issued | Apr 17, 2006 |
| Last updated in NPPES | Feb 13, 2025 |
| Certified by provider | Feb 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 166540-2 | 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 - Pulmonary Disease (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 131 |
|---|---|
| Services billed | 406 across 15 procedure codes |
| Paid by Medicare | $22,349 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,913 · 2,941 30-day fills |
|---|---|
| Patients | 277 |
| Total drug cost | $1,563,596 |
| Generic share | 47% of claims |
Education and affiliations
| Graduation year | 1972 |
|---|---|
| Medicare specialty | Pulmonary Disease |
Medical groups
- Sisters of Charity Hospital of Buffalo New YorkBuffalo, NY · 164 clinicians
- Rpci Oncology, PCWilliamsville, NY · 65 clinicians
Hospital affiliation
- Sisters of Charity HospitalBuffalo, NY
Industry payments (Open Payments)
- 2025$3,275 · 126 payments from 21 companies
- 2024$2,850 · 134 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $762.29 | 28 |
| Glaxosmithkline, LLC. | $509.11 | 26 |
| Merck Sharp & Dohme LLC | $264.22 | 8 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $259.36 | 7 |
| Inspire Medical Systems, Inc. | $228.82 | 5 |
What the 2025 payments were for
- Food and Beverage$3,176 · 125 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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