Tu Nguyen, MD
NPI 1740217942ActiveIndividual· Internal Medicine· Westminster, CA
Internal Medicine (MD) in Westminster, California, trained at University of Alabama School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $2,238,047 for 12,924 claims, against $261,376 paid for services in 2024. Amgen Inc. was the largest of 23 companies reporting payments in 2025, $6,580 in all, mostly food and beverage.
Overview
| NPI | 1740217942 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 26, 2006 |
| Last updated in NPPES | Dec 12, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G78838 | 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 | 384 |
|---|---|
| Services billed | 5,871 across 49 procedure codes |
| Paid by Medicare | $261,376 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,924 · 25,546 30-day fills |
|---|---|
| Patients | 791 |
| Total drug cost | $2,238,047 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of Alabama School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Bolsa Medical GroupWestminster, CA · 14 clinicians
Other facilities
- Advantage Health SystemsHome health agency · Costa Mesa, CA
- California's Best Home Health Services, IncHome health agency · Fullerton, CA
Industry payments (Open Payments)
- 2025$6,580 · 109 payments from 23 companies
- 2024$4,773 · 69 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $1,781 | 39 |
| Lilly USA, LLC | $673.37 | 8 |
| Astrazeneca Pharmaceuticals LP | $497.16 | 21 |
| Novo Nordisk Inc | $395.98 | 5 |
| Mayne Pharma Commercial LLC | $364.81 | 3 |
What the 2025 payments were for
- Food and Beverage$6,580 · 109 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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