Viet Huu Nguyen, DO
NPI 1245406636ActiveIndividual· Internal Medicine· Falls Church, VA
Internal Medicine (DO) with Inova Health Care Services and 1 other group, practicing in Falls Church, Virginia. Their prescriptions cost Medicare Part D more than their services did: $341,521 for 3,526 claims, against $121,112 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 9 companies reporting payments in 2025, $1,041 in all, mostly food and beverage. Lists Inova Fairfax Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1245406636 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | May 5, 2008 |
| Last updated in NPPES | Nov 6, 2025 |
| Certified by provider | Nov 6, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 0102204088 | VA |
| Internal Medicine | 207R00000X | H071890 | 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 - Internal Medicine (DC); Practitioner - Internal Medicine (MD); Practitioner - Internal Medicine (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 338 |
|---|---|
| Services billed | 1,510 across 24 procedure codes |
| Paid by Medicare | $121,112 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,526 · 6,165 30-day fills |
|---|---|
| Patients | 253 |
| Total drug cost | $341,521 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Inova Health Care ServicesAlexandria, VA · 1,817 clinicians
- Privia Medical Group, LLCFairfax, VA · 1,533 clinicians
Hospital affiliations
- Inova Fairfax HospitalFalls Church, VA
- Virginia Hospital CenterArlington, VA
Industry payments (Open Payments)
- 2025$1,041 · 26 payments from 9 companies
- 2024$775.55 · 24 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $406.38 | 10 |
| Novo Nordisk Inc | $258.09 | 4 |
| Kowa Pharmaceuticals America, Inc. | $168.09 | 3 |
| Lilly USA, LLC | $56.74 | 2 |
| Amgen Inc. | $55.08 | 2 |
What the 2025 payments were for
- Food and Beverage$1,041 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 214 internal medicine physicians in Falls Church · All internal medicine physicians in Virginia