Hoang Nguyen, M.D
Family Medicine (M.D) in West Hills, California, trained at University of California, Geffen School of Medicine (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $533,583 for 6,710 claims, against $6,450 paid for services in 2024. Amgen Inc. was the largest of 2 companies reporting payments in 2025, $286.90 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1124011952 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | Yes |
| NPI issued | Aug 26, 2005 |
| Last updated in NPPES | Dec 26, 2024 |
| Certified by provider | Dec 26, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A 60675 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Hoang Mau Nguyen · Owner/Operator | 1128a1 | Jul 20, 1999 | San Diego, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 22 |
|---|---|
| Services billed | 86 across 7 procedure codes |
| Paid by Medicare | $6,450 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,710 · 17,255 30-day fills |
|---|---|
| Patients | 476 |
| Total drug cost | $533,583 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Family Practice |
Industry payments (Open Payments)
- 2025$286.90 · 7 payments from 2 companies
- 2024$121.84 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $164.85 | 6 |
| Bayer Healthcare Pharmaceuticals Inc. | $122.05 | 1 |
What the 2025 payments were for
- Food and Beverage$286.90 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 family medicine physicians in West Hills · All family medicine physicians in California