Leonard Kessler, MD
NPI 1942209135ActiveIndividual· Internal Medicine, Hematology & Oncology· Rockville Centre, NY
Opted out of Medicare from April 2017 to April 2027. Internal Medicine, Hematology & Oncology (MD) in Rockville Centre, New York, licensed in NY, with an NPI issued in July 2005. Part D covered 11 prescriptions written in 2024, 100% of them generic.
Overview
| NPI | 1942209135 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 19, 2005 |
| Last updated in NPPES | Dec 7, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 127415 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Apr 1, 2017 – Apr 1, 2027 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 11 · 21 30-day fills |
|---|---|
| Total drug cost | $88.26 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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