Thuan H. Vo, M.D.
NPI 1366434748ActiveIndividual· Internal Medicine· Westminster, CA
Internal Medicine (M.D.) in Westminster, California, licensed in CA, with an NPI issued in August 2005. Their prescriptions cost Medicare Part D more than their services did: $2,675,808 for 23,602 claims, against $183,799 paid for services in 2024. Lilly USA, LLC was the largest of 6 companies reporting payments in 2025, $137.46 in all, mostly food and beverage.
Overview
| NPI | 1366434748 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 22, 2005 |
| Last updated in NPPES | Jul 13, 2026 |
| Reactivated | Apr 3, 2006 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A63971 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 459 |
|---|---|
| Services billed | 2,529 across 15 procedure codes |
| Paid by Medicare | $183,799 |
Part D prescriptions in 2024
| Prescriptions (claims) | 23,602 · 46,123 30-day fills |
|---|---|
| Patients | 881 |
| Total drug cost | $2,675,808 |
| Generic share | 86% of claims |
Industry payments (Open Payments)
- 2025$137.46 · 6 payments from 6 companies
- 2024$1,502 · 84 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $33.66 | 1 |
| Ironwood Pharmaceuticals, Inc | $28.81 | 1 |
| Abbvie Inc. | $23.74 | 1 |
| Astrazeneca Pharmaceuticals LP | $18.21 | 1 |
| Gilead Sciences, Inc. | $16.57 | 1 |
What the 2025 payments were for
- Food and Beverage$137.46 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 74 internal medicine physicians in Westminster · All internal medicine physicians in California