Sunil Girish Iyer, M.D.
NPI 1033642657ActiveIndividual· Internal Medicine, Medical Oncology· New York, NY
Internal Medicine, Medical Oncology (M.D.) with Trustees of Columbia University in the City of New York, practicing in New York, New York. Their prescriptions cost Medicare Part D more than their services did: $1,009,740 for 269 claims, against $59,609 paid for services in 2024. Daiichi Sankyo Inc. was the largest of 7 companies reporting payments in 2025, $1,270 in all, mostly consulting fees. Lists New York-Presbyterian Hospital as a hospital affiliation.
Overview
| NPI | 1033642657 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 10, 2017 |
| Last updated in NPPES | Jul 14, 2023 |
| Certified by provider | Jul 14, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 324199 | NY |
| Internal Medicine | 207R00000X | 24560 | FL |
| Internal Medicine, Hematology | 207RH0000X | 324199 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 63 |
|---|---|
| Services billed | 593 across 11 procedure codes |
| Paid by Medicare | $59,609 |
Part D prescriptions in 2024
| Prescriptions (claims) | 269 · 293 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $1,009,740 |
| Generic share | 70% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Trustees of Columbia University in the City of New YorkNew York, NY · 2,296 clinicians
Hospital affiliation
- New York-Presbyterian HospitalNew York, NY
Industry payments (Open Payments)
- 2025$1,270 · 22 payments from 7 companies
- 2024$900.12 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $813.70 | 7 |
| Stemline Therapeutics Inc. | $136.13 | 2 |
| Novartis Pharmaceuticals Corporation | $110.67 | 5 |
| Celgene Corporation | $66.87 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $61.36 | 1 |
What the 2025 payments were for
- Consulting Fee$650.00 · 1 payment
- Food and Beverage$620.42 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 385 medical oncologists in New York · All medical oncologists in New York