What is Donald Fallin's NPI number?

Donald Fallin's National Provider Identifier (NPI) is 1396724290, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Donald Fallin's specialty?

Donald Fallin is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).

Where is Donald Fallin located?

Donald Fallin's practice location on file with NPPES is 225 W Winton Ave, Hayward, CA 94544-1216.

What is Donald Fallin's phone number?

The practice phone number listed in the NPPES registry for Donald Fallin is (510) 783-6899.

Is Donald Fallin's NPI active?

Yes — Donald Fallin's NPI (1396724290) is active in the NPPES registry as of the last update on 2025-09-11.

IndividualActive

Donald Fallin, PSY.D.

NPI 1396724290 · Psychologist · Hayward, CA

Donald Fallin, PSY.D. is a Psychologist provider in Hayward, CA (NPI 1396724290).

Provider details

NPI number: 1396724290
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PSY.D.
Sex: Male
Sole proprietor: No
License: PSY16419 (CA)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense PSY16419 (CA)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
20 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

225 W Winton Ave

Suite 202

Hayward, CA 94544-1216

Phone: (510) 783-6899

Street-level locationGet directions

More CA providers

Mailing address