Gerald Chen, PHARM.D.
NPI 1043807514 · Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Rowland Heights, CA
Gerald Chen, PHARM.D. is a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist provider in Rowland Heights, CA (NPI 1043807514).
Provider details
- NPI number
- 1043807514
- Entity type
- Individual
- Primary specialty
- Pharmacist Clinician (PhC)/ Clinical Pharmacy SpecialistPharmacy Service Providers
- Credential
- PHARM.D.
- Sex
- Male
- Sole proprietor
- No
- License
- PH61071032 (WA)
Specialties & taxonomies
Pharmacy Service Providers
Pharmacy Service Providers
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clozapine | 18 |
| Sertraline Hcl | 17 |
| Escitalopram Oxalate | 14 |
| Gabapentin | 14 |
| Trazodone Hcl | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-12-30
- Last updated
- 2024-05-08
- Certified
- 2024-05-08
Frequently asked questions
- What is Gerald Chen's NPI number?
- Gerald Chen's National Provider Identifier (NPI) is 1043807514, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Chen's specialty?
- Gerald Chen is listed in the NPPES registry with a primary specialty of Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist (Pharmacy Service Providers).
- Where is Gerald Chen located?
- Gerald Chen's practice location on file with NPPES is 19169 Kim Ct, Rowland Heights, CA 91748-4939.
- What is Gerald Chen's phone number?
- The practice phone number listed in the NPPES registry for Gerald Chen is (626) 315-5192.
- Is Gerald Chen's NPI active?
- Yes — Gerald Chen's NPI (1043807514) is active in the NPPES registry as of the last update on 2024-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.