What is Catherine Mai's NPI number?

Catherine Mai's National Provider Identifier (NPI) is 1326802612, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Catherine Mai's specialty?

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

Where is Catherine Mai located?

Catherine Mai's practice location on file with NPPES is 20101 Lake Chabot Rd, Castro Valley, CA 94546-5305.

What is Catherine Mai's phone number?

The practice phone number listed in the NPPES registry for Catherine Mai is (510) 537-1234.

Is Catherine Mai's NPI active?

Yes — Catherine Mai's NPI (1326802612) is active in the NPPES registry as of the last update on 2026-05-13.

IndividualActive

Catherine Mai, PHARMD

NPI 1326802612 · Pharmacist · Castro Valley, CA

Catherine Mai, PHARMD is a Pharmacist provider in Castro Valley, CA (NPI 1326802612).

Provider details

NPI number: 1326802612
Entity type: Individual
Primary specialty: PharmacistPharmacy Service Providers
Credential: PHARMD
Sex: Female
Sole proprietor: No
License: RPH89382 (CA)

Specialties & taxonomies

PharmacistPrimary183500000XLicense RPH89382 (CA)
Pharmacy Service Providers
Pharmacist183500000XLicense PH61429694 (WA)
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

20101 Lake Chabot Rd

Castro Valley, CA 94546-5305

Phone: (510) 537-1234

Street-level locationGet directions

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Mailing address