William P. Chen, MD
NPI 1558420661ActiveIndividual· Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery· Irvine, CA
Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery (MD) in Irvine, California, trained at Saint Louis University School of Medicine (class of 1976). In 2024 Medicare paid $8,617 for 28 patients, and Part D covered 111 of their prescriptions, 64% of them generic.
Overview
| NPI | 1558420661 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 6, 2006 |
| Last updated in NPPES | Jan 24, 2022 |
| Certified by provider | Jan 24, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Ophthalmic Plastic and Reconstructive Surgery Primary | 207WX0200X | G34389 | CA |
| Ophthalmology | 207W00000X | G34389 | 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 - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 28 |
|---|---|
| Services billed | 49 across 14 procedure codes |
| Paid by Medicare | $8,617 |
Part D prescriptions in 2024
| Prescriptions (claims) | 111 · 141 30-day fills |
|---|---|
| Patients | 43 |
| Total drug cost | $4,485 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Ophthalmology |
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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