Irving Chen, PHARM.D
Pharmacist · Greenbrae, CA
Irving Chen, PHARM.D is a pharmacist with a practice address in Greenbrae, California, and NPI 1003435975, issued on Apr 10, 2020. Check the license (California 80752, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Irving Chen
- Credential
- PHARM.D
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 80752 CA
Self-reported in NPPES; status is on the state search - Practice location
- 330 Bon Air Ctr, Greenbrae, CA 94904
- Phone
- (415) 461-9093
- Enumerated
- Apr 10, 2020
- Entity
- Type 1 · individual
Also registered at 330 Bon Air Ctr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ronza AlamamrehPharmacist1386259679
- Gurinder AthwalPharmacist1023728151
- Joe ChangPharmacist1578013850
- Lionel Ishikawa, PHARMDPharmacist1922638774
- Nadzeya Khomich, PHARMDPharmacist1184214181
- Stephanie LePharmacist1326601832
Verify Irving Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 80752Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
72% fewer Medicare Part D claims than the average pharmacist in 2024
36 Medicare Part D claims for 27 beneficiaries, against an average of 127 among the 28,933 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
- Shingrix24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
24 pharmacist records list a Greenbrae practice address
They are 24 of the 727 NPPES records with a Greenbrae practice address, and 32,698 pharmacist records in California.
All 24 in Greenbrae → All 32,698 in California → Every provider in Greenbrae →
Other pharmacist records in California
- Caroline A-Haja, PHARM.D.San Pedro, CA1851664361
- Gayatri AachiLivermore, CA1235660754
- Adrian Karlos Aala, PHARMD, RPHHayward, CA1023955499
- Mahshid Aalam, PHARMDLos Angeles, CA1659086155
- Jaleh AaliiveliSan Ramon, CA1336629963
- Cassi Aarvig, RPHTracy, CA1023679941
- Meara Michi AbadOrange, CA1750181178
- Nader Abadier, RPHFontana, CA1326255647
- Samia Abadier, RPHFontana, CA1548742836
- Sandy Abadir, RPHChino Hills, CA1811644412
Common questions
What is Irving Chen, PHARM.D's NPI number?
Irving Chen, PHARM.D's National Provider Identifier (NPI) is 1003435975, issued on Apr 10, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Irving Chen, PHARM.D located?
The NPPES record lists a practice address at 330 Bon Air Ctr, Greenbrae, CA, 94904. Phone: (415) 461-9093. Providers update this record themselves, so call before visiting.
How can I verify Irving Chen, PHARM.D's license?
NPPES lists California license number 80752, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Irving Chen, PHARM.D prescribe under Medicare Part D?
In 2024, Irving Chen, PHARM.D had 36 Medicare Part D claims for 27 beneficiaries; the average among pharmacist prescribers was 127. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.