Irving Chen, PHARM.D
Irving Chen is a Pharmacist provider (Pharmacist) practicing in Greenbrae, CA, registered in the NPPES registry with NPI 1003435975 since 2020. The credential PHARMD stands for Doctor of Pharmacy. Practices at Longs Drug Stores California LLC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1003435975 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Irving Chen |
| Credential | PHARM.D |
| Sex | Male |
| Practice address | Greenbrae, CA, 94904 |
| Phone | 4154619093 |
| Enumeration date | 2020-04-10 |
| Last updated in NPPES | 2020-04-10 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 183500000X | Pharmacist | Primary | 80752 | CA |
PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential
Copy-ready billing details
Provider: Irving Chen, PHARM.D NPI: 1003435975 Taxonomy: 183500000X (Pharmacist) Address: Greenbrae, CA, 94904
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1376585182 | Longs Drug Stores California LLC | Organization | Pharmacy | Greenbrae, CA |
| 1093182750 | Jonathan Schroer | Individual | Pharmacist | Greenbrae, CA |
| 1578013850 | Joe Chang | Individual | Pharmacist | Greenbrae, CA |
| 1235672684 | Chau Nguyen | Individual | Pharmacist | Greenbrae, CA |
| 1316450851 | Nancy Ma | Individual | Pharmacist | Greenbrae, CA |
| 1790259133 | Mark Chee | Individual | Community/Retail Pharmacy | Greenbrae, CA |
| 1326601832 | Stephanie Le | Individual | Pharmacist | Greenbrae, CA |
| 1649834490 | Gurveen Bahia | Individual | Community/Retail Pharmacy | Greenbrae, CA |
Verify this record
Cross-check NPI 1003435975 against the authoritative CMS record: view Irving Chen 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
Where does Irving Chen practice?
What is the NPI number for Irving Chen?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-04-10.