Matthew Seth Weissler, M.D.
NPI 1528225695ActiveIndividual· Internal Medicine, Hematology & Oncology· White Plains, NY
Internal Medicine, Hematology & Oncology (M.D.) in White Plains, New York, trained at New York University School of Medicine (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $6,709,994 for 2,009 claims, against $4,367,607 paid for services in 2024.
Overview
| NPI | 1528225695 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 16, 2008 |
| Last updated in NPPES | Nov 15, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 235558 | 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 - Hematology/Oncology (CT); Practitioner - Hematology/Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 628 |
|---|---|
| Services billed | 340,618 across 171 procedure codes |
| Paid by Medicare | $4,367,607 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,009 · 2,699 30-day fills |
|---|---|
| Patients | 256 |
| Total drug cost | $6,709,994 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Westchester Medical Group, P.CWhite Plains, NY · 415 clinicians
Hospital affiliation
- White Plains Hospital CenterWhite Plains, NY
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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