Oliver Q. Nguyen, MD
NPI 1356418289ActiveIndividual· Internal Medicine· Bellflower, CA
Internal Medicine (MD) in Bellflower, California, trained at University of South Carolina School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $379,396 for 7,608 claims, against $2,942 paid for services in 2024. Atricure, Inc. reported $23.11 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1356418289 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 29, 2006 |
| Last updated in NPPES | Dec 3, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G78281 | 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 | 22 |
|---|---|
| Services billed | 45 across 13 procedure codes |
| Paid by Medicare | $2,942 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,608 · 20,709 30-day fills |
|---|---|
| Patients | 764 |
| Total drug cost | $379,396 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of South Carolina School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - DowneyDowney, CA
Industry payments (Open Payments)
- 2025$23.11 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Atricure, Inc. | $23.11 | 1 |
What the 2025 payments were for
- Food and Beverage$23.11 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 75 internal medicine physicians in Bellflower · All internal medicine physicians in California