# Martin Williams, PhD · NPI 1235200957

Clinical Psychologist · Cupertino, CA · NPI 1235200957

Martin Williams, PhD (NPI 1235200957) is listed in the NPPES registry with the specialty Clinical Psychologist in Cupertino, CA, phone (408) 366-4409, as of the registry file of Jun 8, 2026.

Profile: https://www.gale.care/providers/ca/cupertino/martin-williams-phd-1235200957
Facts changed: 2026-10-22 · hash b9832dd72ac08ba3

## Facts

- Name: Martin Williams (NPPES registry, self-reported, 2026-06-08) {#name}
- Credential: PhD (NPPES registry, self-reported, 2026-06-08) {#credential}
- Specialty: Clinical Psychologist (NPPES registry, self-reported, 2026-06-08) {#specialty}
- Registry stage: as-listed (NPPES registry, self-reported, 2026-06-08) {#registry-stage}
- NPI issued: 2006 (NPPES registry, listed, 2026-06-08) {#npi-issued}
- Practice type: not-sole-proprietor (NPPES registry, self-reported, 2026-06-08) {#practice-type}
- City: Cupertino (NPPES registry, self-reported, 2026-06-08) {#city}
- State: CA (NPPES registry, self-reported, 2026-06-08) {#state}
- Phone: (408) 366-4409 (NPPES registry, self-reported, 2026-06-08) {#phone}
- Insurance: Not listed by AIDS Healthcare Foundation (PHP) for Martin Williams, PhD (NPI 1235200957) in AIDS Healthcare Foundation (PHP)'s directory, file of Sep 19, 2026. That is not a no. {#ins-not-listed-ahf-fhir-directory}
- Insurance: Not listed by Blue Shield of California for Martin Williams, PhD (NPI 1235200957) in Blue Shield of California's directory, file of Oct 22, 2026. That is not a no. {#ins-not-listed-bsc-fhir-directory}
- Insurance: Not listed by CalOptima Health for Martin Williams, PhD (NPI 1235200957) in CalOptima Health's directory, file of Oct 11, 2026. That is not a no. {#ins-not-listed-caloptima-fhir-directory}
- Insurance: Not listed by Central California Alliance for Health for Martin Williams, PhD (NPI 1235200957) in Central California Alliance for Health's directory, file of Oct 22, 2026. That is not a no. {#ins-not-listed-ccah-fhir-directory}
- Insurance: Not listed by Original Medicare for Martin Williams, PhD (NPI 1235200957) in CMS Medicare clinicians file, file of Oct 2, 2026. That is not a no. {#ins-not-listed-cms-medicare-clinicians}
- Insurance: Not listed by Medi-Cal fee-for-service for Martin Williams, PhD (NPI 1235200957) in DHCS Medi-Cal fee-for-service enrolment file, file of Oct 19, 2026. That is not a no. {#ins-not-listed-dhcs-ffs-enrolled-2026-10-19}
- Insurance: Not listed by Gold Coast Health Plan for Martin Williams, PhD (NPI 1235200957) in Gold Coast Health Plan's directory, file of Oct 9, 2026. That is not a no. {#ins-not-listed-goldcoast-fhir-directory}
- Insurance: Not listed by Health Net for Martin Williams, PhD (NPI 1235200957) in Health Net's directory, file of Oct 22, 2026. That is not a no. {#ins-not-listed-healthnet-fhir-directory}
- Insurance: Not listed by Health Plan of San Joaquin for Martin Williams, PhD (NPI 1235200957) in Health Plan of San Joaquin's directory, file of Oct 2, 2026. That is not a no. {#ins-not-listed-hpsj-fhir-directory}
- Insurance: Not listed by Inland Empire Health Plan (IEHP) for Martin Williams, PhD (NPI 1235200957) in Inland Empire Health Plan (IEHP)'s directory, file of Oct 16, 2026. That is not a no. {#ins-not-listed-iehp-fhir-directory}
- Insurance: Not listed by Kern Family Health Care for Martin Williams, PhD (NPI 1235200957) in Kern Family Health Care's directory, file of Oct 9, 2026. That is not a no. {#ins-not-listed-kern-fhir-directory}
- Insurance: Not listed by L.A. Care Health Plan for Martin Williams, PhD (NPI 1235200957) in L.A. Care Health Plan's directory, file of Oct 19, 2026. That is not a no. {#ins-not-listed-lacare-fhir-directory}
- Insurance: Not listed by Partnership HealthPlan of California for Martin Williams, PhD (NPI 1235200957) in Partnership HealthPlan of California's directory, file of Oct 16, 2026. That is not a no. {#ins-not-listed-partnership-fhir-directory}
- Insurance: Not listed by San Francisco Health Plan for Martin Williams, PhD (NPI 1235200957) in San Francisco Health Plan's directory, file of Oct 1, 2026. That is not a no. {#ins-not-listed-sfhp-fhir-directory}
- Insurance: Not listed by VA Community Care for Martin Williams, PhD (NPI 1235200957) in VA's community care locator, file of Oct 22, 2026. That is not a no. {#ins-not-listed-va-ccn-vagov-locator-2026-10}

## Answers

- New patients (not on record): Gale has no record of whether Martin Williams, PhD (NPI 1235200957) is taking new patients. Ask the office.
- Insurance (not listed, which is not a no): Not listed by AIDS Healthcare Foundation (PHP), Blue Shield of California, CalOptima Health, Central California Alliance for Health, Gold Coast Health Plan, Health Net, Health Plan of San Joaquin, Inland Empire Health Plan (IEHP), Kern Family Health Care, L.A. Care Health Plan, Medi-Cal fee-for-service, Original Medicare, Partnership HealthPlan of California, San Francisco Health Plan or VA Community Care for Martin Williams, PhD (NPI 1235200957), in the files Gale read for California on Oct 23, 2026. That is not a no. Ask the office.
- First-visit cost (not on record): Gale has no record of what a first visit with Martin Williams, PhD (NPI 1235200957) costs. Paying yourself? You can ask for a written Good Faith Estimate before the visit.
- Video visits (not on record): Gale has no record of whether Martin Williams, PhD (NPI 1235200957) offers video visits. Ask the office.
- Where (self-reported): Martin Williams, PhD (NPI 1235200957) is listed in Cupertino, CA by the NPPES registry, as of the registry file of Jun 8, 2026.
- Who they see (not on record): Gale has no record of who Martin Williams, PhD (NPI 1235200957) sees. Ask the office.
- What they help with (not on record): Gale has no record of what Martin Williams, PhD (NPI 1235200957) helps with beyond the registry specialty. Ask the office.
- Languages (not on record): Gale has no record of the languages Martin Williams, PhD (NPI 1235200957) speaks. Ask the office.
- How to book (self-reported): Call (408) 366-4409, the practice phone the NPPES registry lists for Martin Williams, PhD (NPI 1235200957) (Jun 8, 2026).
- Next opening (not on record): Gale has no record of the next opening for Martin Williams, PhD (NPI 1235200957). Ask the office.

## Sources

- NPPES registry (CMS): file of 2026-06-08 · https://npiregistry.cms.hhs.gov/provider-view/1235200957
- AIDS Healthcare Foundation (PHP)'s directory: file of 2026-09-19
- Blue Shield of California's directory: file of 2026-10-22 · Gale checked 60 listings in this directory by hand on Oct 22, 2026; 23 were wrong, so confirm with the office.
- CalOptima Health's directory: file of 2026-10-11 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 4 were wrong, so confirm with the office.
- Central California Alliance for Health's directory: file of 2026-10-22
- CMS Medicare clinicians file: file of 2026-10-02 · Gale checked 23 listings in this file by hand on Oct 22, 2026; none were wrong.
- DHCS Medi-Cal fee-for-service enrolment file: file of 2026-10-19
- Gold Coast Health Plan's directory: file of 2026-10-09
- Health Net's directory: file of 2026-10-22 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 6 were wrong, so confirm with the office.
- Health Plan of San Joaquin's directory: file of 2026-10-02
- Inland Empire Health Plan (IEHP)'s directory: file of 2026-10-16 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 4 were wrong, so confirm with the office.
- Kern Family Health Care's directory: file of 2026-10-09
- L.A. Care Health Plan's directory: file of 2026-10-19 · Gale checked 12 listings in this directory by hand on Oct 22, 2026; 4 were wrong, so confirm with the office.
- Partnership HealthPlan of California's directory: file of 2026-10-16
- San Francisco Health Plan's directory: file of 2026-10-01
- VA's community care locator: file of 2026-10-22

## About these facts

- Status words: How each fact is known. confirmed = Listed: a named directory, CMS file or state file lists it. inferred = Likely: a price file suggests it; a likely match is a lead, not a listing. self-reported: the clinician said it, to the NPPES registry or on Gale. not-listed: a source that lists every clinician it covers was read and does not list this one; that is not a no. unknown: no record; ask the office.
- Dates: The date the source gives this record (YYYY-MM-DD). It is not the date of the event the record describes: an opt-out states its own start and end dates in its sentence.
- Hash: Changes only when a fact changes, never on a re-check.

This provider is not affiliated with Gale. This listing is compiled from the NPPES public registry (CMS).
Terms: https://www.gale.care/agents#terms