Dao Bich Nguyen, MD
NPI 1811948680ActiveIndividual· Internal Medicine· Westminster, CA
Internal Medicine (MD) with Family Choice ACO Inc, practicing in Westminster, California. Their prescriptions cost Medicare Part D more than their services did: $840,189 for 5,387 claims, against $106,206 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. reported $45.95 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1811948680 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 15, 2006 |
| Last updated in NPPES | May 7, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A43110 | 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 | 228 |
|---|---|
| Services billed | 2,096 across 17 procedure codes |
| Paid by Medicare | $106,206 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,387 · 13,282 30-day fills |
|---|---|
| Patients | 358 |
| Total drug cost | $840,189 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1976 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pulmonary Disease |
Medical group
- Family Choice ACO IncWestminster, CA · 55 clinicians
Other facilities
- Advantage Health SystemsHome health agency · Costa Mesa, CA
Industry payments (Open Payments)
- 2025$45.95 · 2 payments from 1 company
- 2024$316.10 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $45.95 | 2 |
What the 2025 payments were for
- Food and Beverage$45.95 · 2 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