Anne Grand'Maison, M.D.
NPI 1699170803ActiveIndividual· Internal Medicine, Medical Oncology· Buffalo, NY
Internal Medicine, Medical Oncology (M.D.) with Erie County Medical Center Corporation, practicing in Buffalo, New York. Their prescriptions cost Medicare Part D more than their services did: $43,276 for 73 claims, against $4,770 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 6 companies reporting payments in 2025, $187.42 in all, mostly food and beverage. Lists Erie County Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1699170803 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Oct 30, 2014 |
| Last updated in NPPES | Jul 16, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 286655 | NY |
| Special Hospital | 284300000X | BP10050716 | TX |
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 | 39 |
|---|---|
| Services billed | 69 across 10 procedure codes |
| Paid by Medicare | $4,770 |
Part D prescriptions in 2024
| Prescriptions (claims) | 73 · 75 30-day fills |
|---|---|
| Patients | 20 |
| Total drug cost | $43,276 |
| Generic share | 78% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | Medical Oncology |
Medical group
- Erie County Medical Center CorporationBuffalo, NY · 319 clinicians
Hospital affiliations
- Erie County Medical CenterBuffalo, NY
- Sisters of Charity HospitalBuffalo, NY
Industry payments (Open Payments)
- 2025$187.42 · 8 payments from 6 companies
- 2024$70.54 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $50.52 | 2 |
| Coherus Oncology, Inc. | $41.27 | 2 |
| Janssen Biotech, Inc. | $31.89 | 1 |
| Geron Corporation | $25.72 | 1 |
| Jazz Pharmaceuticals Inc. | $19.17 | 1 |
What the 2025 payments were for
- Food and Beverage$187.42 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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