William P Liu, PHARM.D.
William P Liu is a Geriatric Pharmacist provider (Pharmacist) practicing in Orange, CA, registered in the NPPES registry with NPI 1053498253 since 2006. The credential PHARMD stands for Doctor of Pharmacy. Practices at County of Orange (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1053498253 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | William P Liu |
| Credential | PHARM.D. |
| Sex | Male |
| Practice address | 4000 W METROPOLITAN DR STE 120, Orange, CA, 92868 |
| Phone | 7149723726 |
| Enumeration date | 2006-11-01 |
| Last updated in NPPES | 2022-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 1835G0303X | Geriatric Pharmacist | Primary | RPH 27194 | CA |
PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential
Copy-ready billing details
Provider: William Liu, PHARM.D. NPI: 1053498253 Taxonomy: 1835G0303X (Geriatric Pharmacist) Address: 4000 W METROPOLITAN DR STE 120, Orange, CA, 92868
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1538170535 | Ha-Son Vu | Individual | Clinical Social Worker | Orange, CA |
| 1154412716 | Robert Diaz | Individual | Rehabilitation Practitioner | Orange, CA |
| 1366530438 | Jenny Nguyen | Individual | Social Worker | Orange, CA |
| 1104916808 | Karen Hoffman-Winberry | Individual | Marriage & Family Therapist | Orange, CA |
| 1770661142 | Rosie Alonzo | Individual | Rehabilitation Practitioner | Orange, CA |
| 1215005525 | Eleni Hailemariam | Individual | Psychiatry Physician | Orange, CA |
| 1114080314 | H Mohankumar | Individual | Psychiatry Physician | Orange, CA |
| 1780721639 | County of Orange | Organization | Case Management Agency | Orange, CA |
Verify this record
Cross-check NPI 1053498253 against the authoritative CMS record: view William P Liu on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-07-08.