Ravi Nandan Sinha, MD
NPI 1134184328ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Williamsville, NY
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Buffalo Medical Group, P.C., practicing in Williamsville, New York. Their prescriptions cost Medicare Part D more than their services did: $2,134,611 for 4,645 claims, against $46,218 paid for services in 2024. Lilly USA, LLC was the largest of 10 companies reporting payments in 2025, $485.62 in all, mostly food and beverage. Lists Kaleida Health and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1134184328 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 19, 2006 |
| Last updated in NPPES | Sep 17, 2026 |
| Certified by provider | Sep 17, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 199136 | 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 - Endocrinology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 212 |
|---|---|
| Services billed | 1,190 across 22 procedure codes |
| Paid by Medicare | $46,218 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,645 · 9,772 30-day fills |
|---|---|
| Patients | 542 |
| Total drug cost | $2,134,611 |
| Generic share | 42% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Buffalo Medical Group, P.C.Williamsville, NY · 236 clinicians
Hospital affiliations
- Kaleida HealthBuffalo, NY
- Niagara Falls Memorial Medical CenterNiagara Falls, NY
- Sisters of Charity HospitalBuffalo, NY
Industry payments (Open Payments)
- 2025$485.62 · 21 payments from 10 companies
- 2024$681.98 · 26 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $157.98 | 7 |
| Sequel Med Tech, LLC | $89.24 | 3 |
| Ascendis Pharma Endocrinology Inc | $84.18 | 3 |
| Amgen Inc. | $33.22 | 2 |
| Amneal Pharmaceuticals LLC | $28.59 | 1 |
What the 2025 payments were for
- Food and Beverage$485.62 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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