Elizabeth U. Nguyen, MD
NPI 1770528028ActiveIndividual· Internal Medicine· Camarillo, CA
Internal Medicine (MD) with Inpatient Specialists of California PC, practicing in Camarillo, California. In 2024 Medicare paid $53,692 for 213 patients, and Part D covered 212 of their prescriptions, 87% of them generic. Boston Scientific Corporation was the largest of 3 companies reporting payments in 2025, $497.98 in all, mostly food and beverage. Lists St Johns Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1770528028 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 19, 2006 |
| Last updated in NPPES | Jun 7, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A90331 | 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 - Hospitalist (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 213 |
|---|---|
| Services billed | 568 across 7 procedure codes |
| Paid by Medicare | $53,692 |
Part D prescriptions in 2024
| Prescriptions (claims) | 212 · 218 30-day fills |
|---|---|
| Patients | 86 |
| Total drug cost | $16,336 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Inpatient Specialists of California PCOakdale, CA · 385 clinicians
Hospital affiliation
- St Johns Regional Medical CenterOxnard, CA
Industry payments (Open Payments)
- 2025$497.98 · 5 payments from 3 companies
- 2024$315.55 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $379.32 | 3 |
| Abbott Laboratories | $100.00 | 1 |
| Janssen Biotech, Inc. | $18.66 | 1 |
What the 2025 payments were for
- Food and Beverage$497.98 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 38 internal medicine physicians in Camarillo · All internal medicine physicians in California