Elizabeth Y. Nghiem, M.D.
NPI 1083626212ActiveIndividual· Internal Medicine, Infectious Disease· Fountain Valley, CA
Internal Medicine, Infectious Disease (M.D.) in Fountain Valley, California, trained at Temple University School of Medicine (class of 1995). In 2024 Medicare paid $465,101 for 690 patients, and Part D covered 272 of their prescriptions, 87% of them generic. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $322.73 in all, mostly food and beverage.
Overview
| NPI | 1083626212 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 13, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A62911 | 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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 690 |
|---|---|
| Services billed | 5,968 across 18 procedure codes |
| Paid by Medicare | $465,101 |
Part D prescriptions in 2024
| Prescriptions (claims) | 272 · 286 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $36,056 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Temple University School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Hospital affiliations
- Garden Grove Hospital & Medical CenterGarden Grove, CA
- Huntington Beach HospitalHuntington Beach, CA
- Memorialcare Long Beach Medical CenterLong Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$322.73 · 6 payments from 4 companies
- 2024$266.35 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $156.99 | 3 |
| Novo Nordisk Inc | $125.00 | 1 |
| Shionogi Inc | $26.00 | 1 |
| Organogenesis Inc. | $14.74 | 1 |
What the 2025 payments were for
- Food and Beverage$322.73 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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