Gwilym Parry, MD
NPI 1508961962ActiveIndividual· Internal Medicine· Reston, VA
Internal Medicine (MD) in Reston, Virginia, trained at University of Colorado School of Medicine, Denver (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $139,162 for 1,914 claims, against $50,052 paid for services in 2024.
Overview
| NPI | 1508961962 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 13, 2006 |
| Last updated in NPPES | Aug 18, 2023 |
| Certified by provider | Aug 18, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 0101041163 | VA |
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 - Internal Medicine (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 147 |
|---|---|
| Services billed | 602 across 30 procedure codes |
| Paid by Medicare | $50,052 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,914 · 3,967 30-day fills |
|---|---|
| Patients | 154 |
| Total drug cost | $139,162 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Colorado School of Medicine, Denver |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Reston Hospital CenterReston, VA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 82 internal medicine physicians in Reston · All internal medicine physicians in Virginia