What is John Tzanos's NPI number?

John Tzanos's National Provider Identifier (NPI) is 1366141103, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Tzanos's specialty?

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

Where is John Tzanos located?

John Tzanos's practice location on file with NPPES is 6230 Wilshire Blvd Ste a, Los Angeles, CA 90048-5126.

What is John Tzanos's phone number?

The practice phone number listed in the NPPES registry for John Tzanos is (720) 307-7378.

Is John Tzanos's NPI active?

Yes — John Tzanos's NPI (1366141103) is active in the NPPES registry as of the last update on 2025-12-27.

IndividualActive

John Tzanos, PHD

NPI 1366141103 · Psychologist · Los Angeles, CA

John Tzanos, PHD is a Psychologist provider in Los Angeles, CA (NPI 1366141103).

Provider details

NPI number: 1366141103
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PHD
Sex: Male
Sole proprietor: Yes
License: 0005979 (CO)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 0005979 (CO)
Behavioral Health & Social Service Providers

Profile Score

Established profile(59/100 index)

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

Registry tenure38% of score
3 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

6230 Wilshire Blvd Ste a

Los Angeles, CA 90048-5126

Phone: (720) 307-7378

Street-level locationGet directions

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Mailing address