Jeffrey Chen
NPI 1629751995 · Pharmacist · Oakland, CA
Jeffrey Chen is a Pharmacist provider in Oakland, CA (NPI 1629751995).
Provider details
- NPI number
- 1629751995
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 88177 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 20 | 17 |
| Bupropion Hclbrand: Bupropion Xl | 18 | 17 |
| Lamotrigine | 16 | — |
| Trazodone Hcl | 16 | 14 |
| Escitalopram Oxalate | 15 | 12 |
| Methylphenidate Hcl | 15 | — |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-08-11
- Last updated
- 2023-08-11
- Certified
- 2023-08-11
Frequently asked questions
- What is Jeffrey Chen's NPI number?
- Jeffrey Chen's National Provider Identifier (NPI) is 1629751995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Chen's specialty?
- Jeffrey Chen is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
- Where is Jeffrey Chen located?
- Jeffrey Chen's practice location on file with NPPES is 3600 Broadway, Oakland, CA 94611-5730.
- What is Jeffrey Chen's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Chen is (510) 752-1000.
- Is Jeffrey Chen's NPI active?
- Yes — Jeffrey Chen's NPI (1629751995) is active in the NPPES registry as of the last update on 2023-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.