Arash Zarrin, DO
NPI 1407351729ActiveIndividual· Internal Medicine, Gastroenterology· Frederick, MD
Internal Medicine, Gastroenterology (DO) in Frederick, Maryland, trained at Nova Southeastern College of Osteo Medicine (class of 2018). Mostly services rather than prescriptions: Medicare paid $8,913 for 51 patients in 2024, with only 13 Part D claims. Abbvie Inc. was the largest of 13 companies reporting payments in 2025, $747.70 in all, mostly food and beverage.
Overview
| NPI | 1407351729 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 28, 2018 |
| Last updated in NPPES | Sep 16, 2025 |
| Certified by provider | Sep 16, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | H0096679 | MD |
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 (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 51 |
|---|---|
| Services billed | 88 across 19 procedure codes |
| Paid by Medicare | $8,913 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13 · 28 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $620.40 |
Education and affiliations
| Medical school | Nova Southeastern College of Osteo Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- David W. Kossoff, M.D., PAFrederick, MD · 5 clinicians
Hospital affiliation
- Frederick Health HospitalFrederick, MD
Industry payments (Open Payments)
- 2025$747.70 · 31 payments from 13 companies
- 2024$326.92 · 14 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $115.68 | 5 |
| Janssen Biotech, Inc. | $106.36 | 4 |
| Pfizer Inc. | $90.69 | 4 |
| Aimmune Therapeutics, Inc. | $68.97 | 3 |
| Takeda Pharmaceuticals U.S.A., Inc. | $66.26 | 2 |
What the 2025 payments were for
- Food and Beverage$747.70 · 31 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 27 gastroenterologists in Frederick · All gastroenterologists in Maryland