Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ronald Van Williams, PH.D.

Psychologist in Gilroy, CA · enumerated 2008.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1417125014

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Registry record

Entity type Individual (Type 1)

Name Dr. Ronald Van Williams

Credential PH.D.

Sex Male

Practice address 290 Ioof Ave, Gilroy, CA, 95020

Phone (408) 846-2100

Enumeration date Feb 15, 2008

Last updated in NPPES Feb 15, 2008

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What specialty is Ronald Williams?

Ronald Williams is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Domingo Gomez Rehabilitation Practitioner · Gilroy, CA NPI 1164597753 Jorge Montes Mental Health Counselor · Gilroy, CA NPI 1942375209 Mary Benitez Marriage & Family Therapist · Gilroy, CA NPI 1467529867 Debra Rodriguez Rehabilitation Practitioner · Gilroy, CA NPI 1215004841 Kristin Clark Clinical Social Worker · Gilroy, CA NPI 1851468052 Tenee Brown Mental Health Counselor · Gilroy, CA NPI 1407924400 Angela Klassen Rehabilitation Practitioner · Gilroy, CA NPI 1063580918 Jennifer Malone Psychologist · Gilroy, CA NPI 1912043753

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-15.