Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. STEPHEN IRA KATZ PH.D.
NPI 1154369015
Psychologist - Clinical in Palo Alto, CA

Q: What is Stephen Katz's NPI number?

The NPI number for Stephen Katz is 1154369015. It was assigned to this individual provider in the NPPES registry on June 3, 2006.

Q: What is Stephen Katz's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Katz was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days 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.

Active since June 03, 2006

3801 MIRANDA AVE, PALO ALTO, CA 94304(650) 493-5000(650) 496-2504 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Stephen Ira Katz Ph.d. NPPES

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

DR. STEPHEN IRA KATZ PH.D. (NPI 1154369015) is an individual clinical provider in Palo Alto, California, licensed in California (PSY6266) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1154369015

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. STEPHEN IRA KATZCredential: PH.D.

Location Address3801 MIRANDA AVEPalo Alto, CA 94304-1207

Mailing Address3801 Miranda AvePalo Alto, CA 94304-1207 · (650) 493-5000 · Fax (650) 496-2504

Phone(650) 493-5000

Fax(650) 496-2504

Sole ProprietorNo

Enumeration DateJune 3, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1154369015 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · PSY6266

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

3801 MIRANDA AVE, Palo Alto, CA 94304

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Other Providers at the Same Location NPPES 20

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

DR. LAURA ELIZABETH STODDARD PHARMD

Pharmacist

3801 MIRANDA AVE
PALO ALTO, CA 94304

Santa Clara County (650) 493-5000

DR. KEVIN MCKENNA PH.D.

Psychologist (Clinical)

3801 MIRANDA AVE
PALO ALTO, CA 94304

Santa Clara County (650) 493-5000

VALLANCE WA-LUN AU-YEUNG PHARMD

Pharmacist

3801 MIRANDA AVE
PALO ALTO, CA 94304

Santa Clara County (650) 493-5000

ARLENE VICENTE-VELASCO

Registered Nurse

3801 MIRANDA AVE
PALO ALTO, CA 94304

Santa Clara County (650) 493-5000

MAHNOOSH KUHBANANI SEIFODDINI M.D.

Internal Medicine

3801 MIRANDA AVE, VA PALO ALTO HEALTH CARE SYSTEM (111STC)
PALO ALTO, CA 94304

Santa Clara County (209) 946-3400

DR. EDWARD LEE COHEN MD

Obstetrics & Gynecology

3801 MIRANDA AVE, #112
PALO ALTO, CA 94304

Santa Clara County (650) 493-5000

MRS. JEAN JONES GURGA OTR/L

Occupational Therapist

3801 MIRANDA AVE, PMRS (117)
PALO ALTO, CA 94304

Santa Clara County (650) 493-5000

MS. ELLEN WHITE FORD LCSW, MSW, MPH

Social Worker (Clinical)

3801 MIRANDA AVE, VAPAHCS SOCIAL WORK SERVICE, 122 PA
PALO ALTO, CA 94304

Santa Clara County (650) 493-5000

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 Stephen Katz's NPI number?

The NPI number for Stephen Katz is 1154369015. It was assigned to this individual provider in the NPPES registry on June 3, 2006.

Where is Stephen Katz located?

Stephen Katz practices at 3801 Miranda Ave, Palo Alto, CA 94304. The listed phone number is (650) 493-5000.

What is Stephen Katz's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Stephen Katz was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days 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.