Hung Nguyen, M.D.
NPI 1538181763ActiveIndividual· Internal Medicine· Garden Grove, CA
Internal Medicine (M.D.) in Garden Grove, California, trained at University of Washington School of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $1,220,349 for 11,854 claims, against $169,839 paid for services in 2024. Genzyme Corporation was the largest of 7 companies reporting payments in 2025, $505.84 in all, mostly food and beverage.
Overview
| NPI | 1538181763 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 24, 2006 |
| Last updated in NPPES | Apr 10, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G71814 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 305 |
|---|---|
| Services billed | 2,337 across 18 procedure codes |
| Paid by Medicare | $169,839 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,854 · 23,751 30-day fills |
|---|---|
| Patients | 716 |
| Total drug cost | $1,220,349 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Family Practice |
Medical group
- Hung Nguyen, M.D., Inc.Garden Grove, CA · 2 clinicians
Hospital affiliation
- Garden Grove Hospital & Medical CenterGarden Grove, CA
Other facilities
- Advantage Health SystemsHome health agency · Costa Mesa, CA
- California's Best Home Health Services, IncHome health agency · Fullerton, CA
- Spirit Home HealthHome health agency · Los Angeles, CA
- Twins Quality Home Health Care, IncHome health agency · Glendale, CA
- Vast Home Health, IncHome health agency · Burbank, CA
- Devoted Health HospiceHospice · Valencia, CA
Industry payments (Open Payments)
- 2025$505.84 · 8 payments from 7 companies
- 2024$1,203 · 12 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $164.67 | 2 |
| Ardelyx, Inc. | $125.00 | 1 |
| Aimmune Therapeutics, Inc. | $125.00 | 1 |
| Stryker Corporation | $29.21 | 1 |
| Exact Sciences Corporation | $26.09 | 1 |
What the 2025 payments were for
- Food and Beverage$505.84 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 internal medicine physicians in Garden Grove · All internal medicine physicians in California