Tamar D. Mermelstein, PA-C
NPI 1811411267ActiveIndividual· Physician Assistant· Ridgewood, NJ
Physician Assistant (PA-C) with Clark Dermatology LLC, practicing in Ridgewood, New Jersey. 224 Medicare patients in 2024, $63,129 paid; nearly all of their 436 Part D prescriptions were generic (92%). Sun Pharmaceutical Industries Inc. was the largest of 16 companies reporting payments in 2025, $934.87 in all, mostly food and beverage.
Overview
| NPI | 1811411267 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jul 27, 2017 |
| Last updated in NPPES | Jun 19, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 25MP00469000 | NJ |
| Physician Assistant, Medical | 363AM0700X | 021108 | NY |
| Physician Assistant, Surgical | 363AS0400X | 021108 | 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 - Physician Assistant (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 224 |
|---|---|
| Services billed | 1,009 across 50 procedure codes |
| Paid by Medicare | $63,129 |
Part D prescriptions in 2024
| Prescriptions (claims) | 436 · 473 30-day fills |
|---|---|
| Patients | 185 |
| Total drug cost | $77,900 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Clark Dermatology LLCStaten Island, NY · 49 clinicians
Industry payments (Open Payments)
- 2025$934.87 · 65 payments from 16 companies
- 2024$1,175 · 107 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sun Pharmaceutical Industries Inc. | $183.54 | 20 |
| Novartis Pharmaceuticals Corporation | $110.67 | 5 |
| Incyte Corporation | $93.73 | 6 |
| Regeneron Healthcare Solutions, Inc. | $69.56 | 4 |
| Pfizer Inc. | $66.39 | 4 |
What the 2025 payments were for
- Food and Beverage$934.87 · 65 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 30 physician assistants in Ridgewood · All physician assistants in New Jersey