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DR. GREGORY ERNEST KOCH PSY.D.
NPI 1730180852
Psychologist - Group Psychotherapy in San Diego, CA

Active since August 10, 2005
4081 STEPHENS ST, SAN DIEGO, CA 92103(888) 588-7836(888) 588-7836 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Gregory Ernest Koch Psy.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY ERNEST KOCH PSY.D. (NPI 1730180852) is an individual group psychotherapy provider in San Diego, California, licensed in California (PSY19917) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1730180852
Entity TypeIndividualMale
Primary Taxonomy103TP2701X
Provider Legal NameDR. GREGORY ERNEST KOCHCredential: PSY.D.
Location Address4081 STEPHENS STSan Diego, CA 92103-1242
Mailing Address4081 Stephens StSan Diego, CA 92103-1242 · (888) 588-7836 · Fax (888) 588-7836
Phone(888) 588-7836
Fax(888) 588-7836
Sole ProprietorYes
Enumeration DateAugust 10, 2005
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1730180852 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyPsychologist · Group PsychotherapyBehavioral Health & Social Service Providers
Taxonomy Code103TP2701X
License✔ Licensed in CA · PSY19917
Definition
A psychologist who specializes in group psychology and group psychotherapy that is an evidenced-based specialty that prepares group leaders to identify and capitalize on developmental and healing possibilities embedded in the interpersonal/intrapersonal functioning of individual group members as well as collectively for the group. Emphasis is placed on the use of group dynamics to assist and treat individual group members. The specialty is applicable to all age groups, children, adolescents, adults and older adults, for a wide variety of conditions and concerns, and in numerous and diverse settings.
Also ListedPsychologistTaxonomy 103T00000X · License PSY19917 (CA)
Also ListedPsychologist · Cognitive & BehavioralTaxonomy 103TB0200X · License PSY19917 (CA)
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License PSY19917 (CA)
Also ListedPsychologist · Clinical Child & AdolescentTaxonomy 103TC2200X · License PSY19917 (CA)

Other Identifiers 4

Other0PL199170CA · Blue Shield
Other11397904CA · Caqh
MedicaidPSY199170CA
Other5551998CA · Firsthealth/ccn

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. NINA PATRICIA AKIN P.H.D
Psychologist (Clinical)
4081 STEPHENS ST
SAN DIEGO, CA 92103
San Diego County (619) 757-4498
DR. ALICIA GILBERT PHD
Psychologist
4081 STEPHENS ST
SAN DIEGO, CA 92103
San Diego County (858) 401-2142

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Koch's NPI number?

The NPI number for Gregory Koch is 1730180852. It was assigned to this individual provider in the NPPES registry on August 10, 2005.

Where is Gregory Koch located?

Gregory Koch practices at 4081 Stephens St, San Diego, CA 92103. The listed phone number is (888) 588-7836.

What is Gregory Koch's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Group Psychotherapy, with taxonomy code 103TP2701X.

When was this NPI record last updated?

The NPPES record for Gregory Koch was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.