What is Donald Williams's NPI number?

Donald Williams's National Provider Identifier (NPI) is 1396132528, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Donald Williams's specialty?

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

Where is Donald Williams located?

Donald Williams's practice location on file with NPPES is 451 Lytton Ave, Palo Alto, CA 94301-1535.

What is Donald Williams's phone number?

The practice phone number listed in the NPPES registry for Donald Williams is (650) 327-7446.

Is Donald Williams's NPI active?

Yes — Donald Williams's NPI (1396132528) is active in the NPPES registry as of the last update on 2015-04-27.

IndividualActive

Donald Williams, PSY.D.

NPI 1396132528 · Psychologist · Palo Alto, CA

Donald Williams, PSY.D. is a Psychologist provider in Palo Alto, CA (NPI 1396132528).

Provider details

NPI number: 1396132528
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PSY.D.
Sex: Male
Sole proprietor: Yes
License: PSY 12484 (CA)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense PSY 12484 (CA)
Behavioral Health & Social Service Providers

Profile Score

Established profile(74/100 index)

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

Registry tenure38% of score
11 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

451 Lytton Ave

Palo Alto, CA 94301-1535

Phone: (650) 327-7446

Street-level locationGet directions

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Mailing address