Richard Mermelstein, MD
NPI 1629488440ActiveIndividual· Internal Medicine· W Hempstead, NY
Internal Medicine (MD) in W Hempstead, New York, licensed in NY, with an NPI issued in May 2014. Their prescriptions cost Medicare Part D more than their services did: $80,100 for 698 claims, against $49,683 paid for services in 2024. Scilex Pharmaceuticals Inc. was the largest of 16 companies reporting payments in 2025, $789.44 in all, mostly food and beverage.
Overview
| NPI | 1629488440 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 1, 2014 |
| Last updated in NPPES | Sep 10, 2025 |
| Certified by provider | Sep 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 290500 | 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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 192 |
|---|---|
| Services billed | 805 across 60 procedure codes |
| Paid by Medicare | $49,683 |
Part D prescriptions in 2024
| Prescriptions (claims) | 698 · 1,270 30-day fills |
|---|---|
| Patients | 131 |
| Total drug cost | $80,100 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Other facilities
- NYU Langone Home Health CareHome health agency · Garden City, NY
Industry payments (Open Payments)
- 2025$789.44 · 38 payments from 16 companies
- 2024$2,015 · 85 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Scilex Pharmaceuticals Inc. | $224.27 | 10 |
| Astellas Pharma US Inc | $75.74 | 3 |
| Janssen Pharmaceuticals, Inc | $59.18 | 2 |
| Amgen Inc. | $56.76 | 3 |
| Exact Sciences Corporation | $52.95 | 2 |
What the 2025 payments were for
- Food and Beverage$764.44 · 34 payments
- Gift$25.00 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records