Joseph Mermelstein, MD
NPI 1689963662ActiveIndividual· Internal Medicine, Gastroenterology· Scarsdale, NY
Internal Medicine, Gastroenterology (MD) in Scarsdale, New York, trained at Icahn School of Medicine at Mount Sinai (class of 2011). In 2024 Medicare paid $115,263 for 478 patients, and Part D covered 434 of their prescriptions, 78% of them generic. Qol Medical, LLC reported $28.87 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1689963662 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 30, 2011 |
| Last updated in NPPES | May 24, 2021 |
| Certified by provider | May 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 273034 | NY |
| Internal Medicine | 207R00000X | 273034 | 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 - Gastroenterology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 478 |
|---|---|
| Services billed | 851 across 30 procedure codes |
| Paid by Medicare | $115,263 |
Part D prescriptions in 2024
| Prescriptions (claims) | 434 · 764 30-day fills |
|---|---|
| Patients | 167 |
| Total drug cost | $162,015 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Icahn School of Medicine at Mount Sinai |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- White Plains Physician Services PCHarrison, NY · 386 clinicians
Hospital affiliation
- White Plains Hospital CenterWhite Plains, NY
Industry payments (Open Payments)
- 2025$28.87 · 1 payment from 1 company
- 2024$199.08 · 10 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Qol Medical, LLC | $28.87 | 1 |
What the 2025 payments were for
- Food and Beverage$28.87 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 gastroenterologists in Scarsdale · All gastroenterologists in New York