IndividualActive
Keren Chen
NPI 1336911742 · Pharmacist · Castro Valley, CA
Keren Chen is a Pharmacist provider in Castro Valley, CA (NPI 1336911742).
Provider details
- NPI number
- 1336911742
- Entity type
- Individual
- Primary specialty
- PharmacistPharmacy Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 88384 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
Established profile(57/100 index)
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.
Practice location
21039 Glenwood Dr
Castro Valley, CA 94552-5242
Phone: (510) 861-8978
Street-level locationGet directions
Mailing address
21039 Glenwood Dr
Castro Valley, CA 94552-5242
Registry dates
- Enumerated
- 2023-10-27
- Last updated
- 2023-10-27
- Certified
- 2023-10-27
Frequently asked questions
- What is Keren Chen's NPI number?
- Keren Chen's National Provider Identifier (NPI) is 1336911742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Keren Chen's specialty?
- Keren Chen is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
- Where is Keren Chen located?
- Keren Chen's practice location on file with NPPES is 21039 Glenwood Dr, Castro Valley, CA 94552-5242.
- What is Keren Chen's phone number?
- The practice phone number listed in the NPPES registry for Keren Chen is (510) 861-8978.
- Is Keren Chen's NPI active?
- Yes — Keren Chen's NPI (1336911742) is active in the NPPES registry as of the last update on 2023-10-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.