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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. WILLIAM MARTIN RALPH PHD
NPI 1295796233
Psychologist - Clinical in San Francisco, CA

Active since March 29, 2006
801 PORTOLA DR, #208, SAN FRANCISCO, CA 94127(415) 515-2261 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Martin Ralph Phd NPPES

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

DR. WILLIAM MARTIN RALPH PHD (NPI 1295796233) is an individual clinical provider in San Francisco, California, licensed in California (PSY11009) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1295796233
Entity TypeIndividualMale
Primary Taxonomy103TC0700X
Provider Legal NameDR. WILLIAM MARTIN RALPHCredential: PHD
Location Address801 PORTOLA DR, #208San Francisco, CA 94127
Mailing Address801 Portola Dr, #208San Francisco, CA 94127 · (415) 515-2261
Phone(415) 515-2261
Sole ProprietorNo
Enumeration DateMarch 29, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1295796233 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 · PSY11009
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.
801 PORTOLA DR, San Francisco, CA 94127
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Other Providers at the Same Location NPPES 12

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

NINA ANDERSON LCSW
Social Worker (Clinical)
801 PORTOLA DR, SUITE 202
SAN FRANCISCO, CA 94127
San Francisco County (415) 871-7902
WILLIAM HENRY BOEHLE DDS
Dentist
801 PORTOLA DR, STE 103
SAN FRANCISCO, CA 94127
San Francisco County (415) 731-7700
MS. DEVON DENISE RUBIN LCSW
Social Worker (Clinical)
801 PORTOLA DR, SUITE 202
SAN FRANCISCO, CA 94127
San Francisco County (415) 423-4864
DANIEL GUNTHER L.C.S.W.
Social Worker (Clinical)
801 PORTOLA DR, SUITE 207
SAN FRANCISCO, CA 94127
San Francisco County (415) 326-7295
MS. GAYLE LYNN PAUL M.A., L.M.F.T.
Marriage & Family Therapist
801 PORTOLA DR
SAN FRANCISCO, CA 94127
San Francisco County (415) 412-9674
DR. JOSEPH ALFRED NICOLAS DDS
Dentist (General Practice)
801 PORTOLA DR, SUITE 204
SAN FRANCISCO, CA 94127
San Francisco County (415) 566-9700
MS. DONNA J. SCOTT M.F.T.
Marriage & Family Therapist
801 PORTOLA DR, SUITE #207
SAN FRANCISCO, CA 94127
San Francisco County (415) 566-6162
NINA ANDERSON, LCSW
Social Worker (Clinical)
801 PORTOLA DR, SUITE 202
SAN FRANCISCO, CA 94127
San Francisco County (415) 871-7902

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 William Ralph's NPI number?

The NPI number for William Ralph is 1295796233. It was assigned to this individual provider in the NPPES registry on March 29, 2006.

Where is William Ralph located?

William Ralph practices at 801 Portola Dr #208, San Francisco, CA 94127. The listed phone number is (415) 515-2261.

What is William Ralph'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 William Ralph 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 23 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.