Arunan Vamadevan, M.D.
NPI 1457546236ActiveIndividual· Internal Medicine, Gastroenterology· Manassas, VA
Internal Medicine, Gastroenterology (M.D.) in Manassas, Virginia, trained at State University of New York Downstate Medical Center (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $114,194 for 100 claims, against $35,053 paid for services in 2024. Abbvie Inc. was the largest of 20 companies reporting payments in 2025, $1,905 in all, mostly food and beverage.
Overview
| NPI | 1457546236 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 13, 2007 |
| Last updated in NPPES | Dec 19, 2023 |
| Certified by provider | Dec 19, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 0101258027 | VA |
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 - Gastroenterology (DC); Practitioner - Gastroenterology (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 191 |
|---|---|
| Services billed | 316 across 26 procedure codes |
| Paid by Medicare | $35,053 |
Part D prescriptions in 2024
| Prescriptions (claims) | 100 · 189 30-day fills |
|---|---|
| Patients | 48 |
| Total drug cost | $114,194 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Gastroenterology Associates of Northern Virginia, LLCAlexandria, VA · 100 clinicians
Hospital affiliations
- Inova Alexandria HospitalAlexandria, VA
- Inova Mount Vernon HospitalAlexandria, VA
- Sentara Northern Virginia Medical CenterWoodbridge, VA
Industry payments (Open Payments)
- 2025$1,905 · 75 payments from 20 companies
- 2024$1,046 · 47 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $434.80 | 16 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $243.50 | 10 |
| Pfizer Inc. | $208.85 | 11 |
| Takeda Pharmaceuticals U.S.A., Inc. | $185.21 | 8 |
| Neuraxis, Inc. | $134.50 | 1 |
What the 2025 payments were for
- Food and Beverage$1,905 · 75 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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