Andy Ngoc Truong, M.D.
NPI 1174583033ActiveIndividual· Internal Medicine· Fountain Valley, CA
Internal Medicine (M.D.) in Fountain Valley, California, trained at University of California, Irvine, California College of Medicine (class of 1996). 253 Medicare patients in 2024, $81,452 paid; nearly all of their 230 Part D prescriptions were generic (94%). Gilead Sciences, Inc. was the largest of 5 companies reporting payments in 2025, $769.34 in all, mostly food and beverage.
Overview
| NPI | 1174583033 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 24, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A66251 | 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 | 253 |
|---|---|
| Services billed | 845 across 10 procedure codes |
| Paid by Medicare | $81,452 |
Part D prescriptions in 2024
| Prescriptions (claims) | 230 · 243 30-day fills |
|---|---|
| Patients | 125 |
| Total drug cost | $5,435 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | University of California, Irvine, California College of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
Medical group
- Memorialcare Medical FoundationLong Beach, CA · 566 clinicians
Hospital affiliation
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
Industry payments (Open Payments)
- 2025$769.34 · 6 payments from 5 companies
- 2024$929.21 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $275.00 | 2 |
| Galderma Laboratories, L.P. | $126.63 | 1 |
| Aimmune Therapeutics, Inc. | $124.72 | 1 |
| Leo Pharma Inc. | $121.62 | 1 |
| Astrazeneca Pharmaceuticals LP | $121.37 | 1 |
What the 2025 payments were for
- Food and Beverage$769.34 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 111 internal medicine physicians in Fountain Valley · All internal medicine physicians in California