Gerald Chen, PHARM.D.
Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Rowland Heights, CA
Gerald Chen, PHARM.D. is a pharmacist clinician (phc)/ clinical pharmacy specialist with a practice address in Rowland Heights, California, and NPI 1043807514, issued on Dec 30, 2020. Check the license (California RPH88065, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gerald Chen
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist 1835P0018X
- License numbers
- RPH88065 CA
PH61071032 WA
Self-reported in NPPES; status is on the state search - Practice location
- 19169 Kim CT, Rowland Heights, CA 91748
- Phone
- (626) 315-5192
- Enumerated
- Dec 30, 2020
- Record last updated
- May 8, 2024
- Entity
- Type 1 · individual
8 nearest pharmacist clinician (phc)/ clinical pharmacy specialist records → All 1,593 in California → Look up another NPI →
Verify Gerald 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 RPH88065Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average pharmacist clinician (phc)/ clinical pharmacy specialist in 2024
169 Medicare Part D claims for 24 beneficiaries, against an average of 253 among the 1,614 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Clozapine18 claims
- Sertraline Hcl17 claims
- Escitalopram Oxalate14 claims
- Gabapentin14 claims
- Trazodone Hcl14 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.
Gerald Chen among 1,593 pharmacist clinician (phc)/ clinical pharmacy specialist records in California
Gerald Chen, PHARM.D. is one of 1,593 pharmacist clinician (phc)/ clinical pharmacy specialist records with a practice address in California. 17% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 76% of them.
- NPI issued2020 · 76% of these records are older, 19% newer
- In a Medicare fileYes · 17% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2024 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1835P0018X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 pharmacist clinician (phc)/ clinical pharmacy specialist records list a practice address in Rowland Heights
They are 3 of the 816 NPPES records with a practice address in Rowland Heights, and 1,593 pharmacist clinician (phc)/ clinical pharmacy specialist records in California.
All 1,593 in California → Every provider in Rowland Heights → Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist nationwide →
The 8 pharmacist clinician (phc)/ clinical pharmacy specialist records with the nearest ZIP codes
- James GuanRowland Heights, CA 917481952790677
- Ding NguiRowland Heights, CA 917481124472493
- Catherine Nguyen, PHARMDCity Of Industry, CA 917481215222070
- Annie KimHacienda Heights, CA 917451437713815
- Mina DangEastvale, CA 917521104295468
- Carolina Lopez-Juarez, PHARM.D.Eastvale, CA 917521376086207
- Tomy VuongLa Puente, CA 917441235655499
- Ashlee Park, PHARMDMonterey Park, CA 917541558213298
Common questions
What is Gerald Chen, PHARM.D.'s NPI number?
Gerald Chen, PHARM.D.'s National Provider Identifier (NPI) is 1043807514, issued on Dec 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Chen, PHARM.D. located?
The NPPES record lists a practice address at 19169 Kim CT, Rowland Heights, CA, 91748. Phone: (626) 315-5192. Providers update this record themselves, so call before visiting.
How can I verify Gerald Chen, PHARM.D.'s license?
NPPES lists California license number RPH88065, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gerald Chen, PHARM.D. prescribe under Medicare Part D?
In 2024, Gerald Chen, PHARM.D. had 169 Medicare Part D claims for 24 beneficiaries; the average among pharmacist clinician (phc)/ clinical pharmacy specialist prescribers was 253. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.