Mitchell Fenster, M.D.
NPI 1548378573ActiveIndividual· Internal Medicine· Valhalla, NY
Internal Medicine (M.D.) in Valhalla, New York, trained at Icahn School of Medicine at Mount Sinai (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $458,689 for 5,882 claims, against $291,814 paid for services in 2024. Amneal Pharmaceuticals LLC reported $24.66 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1548378573 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 29, 2006 |
| Last updated in NPPES | Sep 12, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 153600 | 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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 417 |
|---|---|
| Services billed | 5,352 across 57 procedure codes |
| Paid by Medicare | $291,814 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,882 · 13,681 30-day fills |
|---|---|
| Patients | 540 |
| Total drug cost | $458,689 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Select PT, OT and Slp Rehabilitation Ny, PLLCHudson, NY · 301 clinicians
- Westchester Health Medical PCStamford, CT · 88 clinicians
Hospital affiliations
- Northern Westchester HospitalMount Kisco, NY
- Phelps HospitalSleepy Hollow, NY
- White Plains Hospital CenterWhite Plains, NY
Other facilities
- North Shore Home Care ChhaHome health agency · Westbury, NY
- Tender Loving Care, An Amedisys CompanyHome health agency · Carle Place, NY
- Burke Rehabilitation HospitalInpatient rehabilitation facility · White Plains, NY
Industry payments (Open Payments)
- 2025$24.66 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amneal Pharmaceuticals LLC | $24.66 | 1 |
What the 2025 payments were for
- Food and Beverage$24.66 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 69 internal medicine physicians in Valhalla · All internal medicine physicians in New York