What is William Zen's NPI number?

William Zen's National Provider Identifier (NPI) is 1386963551, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Zen's specialty?

William Zen is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).

Where is William Zen located?

William Zen's practice location on file with NPPES is 933 W Arrow Hwy, San Dimas, CA 91773-2420.

What is William Zen's phone number?

The practice phone number listed in the NPPES registry for William Zen is (714) 328-3893.

Is William Zen's NPI active?

Yes — William Zen's NPI (1386963551) is active in the NPPES registry as of the last update on 2010-05-26.

IndividualActive

William Zen, PHARM.D.

NPI 1386963551 · Pharmacist · San Dimas, CA

William Zen, PHARM.D. is a Pharmacist provider in San Dimas, CA (NPI 1386963551).

Provider details

NPI number: 1386963551
Entity type: Individual
Primary specialty: PharmacistPharmacy Service Providers
Credential: PHARM.D.
Sex: Male
Sole proprietor: Yes
License: 50253 (CA)

Practice location

933 W Arrow Hwy

San Dimas, CA 91773-2420

Phone: (714) 328-3893

Fax: (714) 876-0744

Street-level locationGet directions

More CA providers

Mailing address

933 W Arrow Hwy

San Dimas, CA 91773-2420

Specialties & taxonomies

PharmacistPrimary183500000XLicense 50253 (CA)
Pharmacy Service Providers

Profile Score

Detailed profile(84/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
16 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.

Enumerated: 2010-05-26
Last updated: 2010-05-26

Frequently asked questions

What is William Zen's NPI number?: William Zen's National Provider Identifier (NPI) is 1386963551, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is William Zen's specialty?: William Zen is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
Where is William Zen located?: William Zen's practice location on file with NPPES is 933 W Arrow Hwy, San Dimas, CA 91773-2420.
What is William Zen's phone number?: The practice phone number listed in the NPPES registry for William Zen is (714) 328-3893.
Is William Zen's NPI active?: Yes — William Zen's NPI (1386963551) is active in the NPPES registry as of the last update on 2010-05-26.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions