IndividualActive
Patrick Chen
NPI 1821890310 · Pharmacist · Berkeley, CA
Patrick Chen is a Pharmacist provider in Berkeley, CA (NPI 1821890310).
Provider details
- NPI number
- 1821890310
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 90739 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
Established profile(55/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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.
Practice location
1444 Shattuck Ave
Berkeley, CA 94709-1411
Phone: (510) 542-5242
Street-level locationGet directions
Mailing address
2132 16th Ave
San Francisco, CA 94116-1845
Registry dates
- Enumerated
- 2025-03-25
- Last updated
- 2025-09-06
- Certified
- 2025-09-06
Frequently asked questions
- What is Patrick Chen's NPI number?
- Patrick Chen's National Provider Identifier (NPI) is 1821890310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Chen's specialty?
- Patrick Chen is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
- Where is Patrick Chen located?
- Patrick Chen's practice location on file with NPPES is 1444 Shattuck Ave, Berkeley, CA 94709-1411.
- What is Patrick Chen's phone number?
- The practice phone number listed in the NPPES registry for Patrick Chen is (510) 542-5242.
- Is Patrick Chen's NPI active?
- Yes — Patrick Chen's NPI (1821890310) is active in the NPPES registry as of the last update on 2025-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.