Daniel Mahendran Ratnarajah, MD
NPI 1023043858ActiveIndividual· Internal Medicine· Oneida, NY
Internal Medicine (MD) with Oneida Indian Health Services and 1 other group, practicing in Oneida, New York. Their prescriptions cost Medicare Part D more than their services did: $452,183 for 5,216 claims, against $43,651 paid for services in 2024. Abbvie Inc. was the largest of 24 companies reporting payments in 2025, $1,545 in all, mostly food and beverage. Lists Oneida Health Hospital as a hospital affiliation.
Overview
| NPI | 1023043858 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 11, 2006 |
| Last updated in NPPES | Mar 25, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 197066 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (NY); Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 169 |
|---|---|
| Services billed | 781 across 35 procedure codes |
| Paid by Medicare | $43,651 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,216 · 9,757 30-day fills |
|---|---|
| Patients | 378 |
| Total drug cost | $452,183 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Oneida Indian Health ServicesOneida, NY · 9 clinicians
- Oneida Medical Associates PLLCOneida, NY · 3 clinicians
Hospital affiliation
- Oneida Health HospitalOneida, NY
Industry payments (Open Payments)
- 2025$1,545 · 81 payments from 24 companies
- 2024$1,531 · 78 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $244.88 | 13 |
| Alk-Abello, Inc | $158.69 | 6 |
| Astrazeneca Pharmaceuticals LP | $154.61 | 12 |
| Glaxosmithkline, LLC. | $146.44 | 7 |
| Pfizer Inc. | $101.15 | 5 |
What the 2025 payments were for
- Food and Beverage$1,545 · 81 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine providers in Oneida
- 1255338018
- 1780661488
- 1467549246
- 1023043791
- 1447273396
- 1952670069
- 1750529103
- 1760417992