Elizabeth Thuc Arnold, MD
NPI 1538352554ActiveIndividual· Internal Medicine· Sylmar, CA
Internal Medicine (MD) in Sylmar, California, trained at University of California, San Diego School of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $43,957 for 426 claims, against $8,005 paid for services in 2024.
Overview
| NPI | 1538352554 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 22, 2007 |
| Last updated in NPPES | Nov 29, 2021 |
| Certified by provider | Sep 16, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A99241 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 45 |
|---|---|
| Services billed | 97 across 11 procedure codes |
| Paid by Medicare | $8,005 |
Part D prescriptions in 2024
| Prescriptions (claims) | 426 · 890 30-day fills |
|---|---|
| Patients | 143 |
| Total drug cost | $43,957 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of California, San Diego School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital - West laLos Angeles, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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