What is Mark Fish's NPI number?

Mark Fish's National Provider Identifier (NPI) is 1598878803, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Fish's specialty?

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

Where is Mark Fish located?

Mark Fish's practice location on file with NPPES is 2355 Westwood Blvd #717, Los Angeles, CA 90064.

What is Mark Fish's phone number?

The practice phone number listed in the NPPES registry for Mark Fish is (310) 339-6405.

Is Mark Fish's NPI active?

Yes — Mark Fish's NPI (1598878803) is active in the NPPES registry as of the last update on 2025-05-14.

IndividualActive

Mark Fish, PHD

NPI 1598878803 · Clinical Psychologist · Los Angeles, CA

Mark Fish, PHD is a Clinical Psychologist provider in Los Angeles, CA (NPI 1598878803).

Provider details

NPI number: 1598878803
Entity type: Individual
Primary specialty: Clinical PsychologistBehavioral Health & Social Service Providers
Credential: PHD
Sex: Male
Sole proprietor: No
License: PSY5501 (CA)

Specialties & taxonomies

Clinical PsychologistPrimary103TC0700XLicense PSY5501 (CA)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(90/100 index)

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

Registry tenure38% of score
19 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

2355 Westwood Blvd #717

Los Angeles, CA 90064

Phone: (310) 339-6405

Fax: (310) 645-9531

Street-level locationGet directions

More CA providers

Mailing address