Ruben Niesvizky, MD
NPI 1710074885ActiveIndividual· Internal Medicine, Hematology & Oncology· New York, NY
Internal Medicine, Hematology & Oncology (MD) with Weill Medical College of Cornell, practicing in New York, New York. In 2024 Medicare paid $3,861,505 for 229 patients, and Part D covered 514 of their prescriptions, 87% of them generic. Glaxosmithkline, LLC. was the largest of 6 companies reporting payments in 2025, $74,076 in all, mostly consulting fees. Lists New York-Presbyterian Hospital as a hospital affiliation.
Overview
| NPI | 1710074885 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 9, 2006 |
| Last updated in NPPES | Jul 31, 2023 |
| Certified by provider | Jul 31, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 195309 | 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 - Medical Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 229 |
|---|---|
| Services billed | 130,183 across 61 procedure codes |
| Paid by Medicare | $3,861,505 |
Part D prescriptions in 2024
| Prescriptions (claims) | 514 · 864 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $160,338 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology |
| Telehealth | Offers telehealth |
Medical group
- Weill Medical College of CornellNew York, NY · 2,051 clinicians
Hospital affiliation
- New York-Presbyterian HospitalNew York, NY
Industry payments (Open Payments)
- 2025$74,076 · 23 payments from 6 companies
- 2024$144,972 · 33 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $45,500 | 3 |
| Janssen Biotech, Inc. | $16,840 | 12 |
| Karyopharm Therapeutics Inc. | $4,636 | 3 |
| Amgen Inc. | $4,000 | 1 |
| E.R. Squibb & Sons, L.L.C. | $3,024 | 2 |
What the 2025 payments were for
- Consulting Fee$52,820 · 6 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$15,280 · 5 payments
- Honoraria$4,350 · 1 payment
- Food and Beverage$869.51 · 9 payments
- Travel and Lodging$756.90 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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