Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Katherine Nguyen Williams, PHD

Individual provider Clinical Child & Adolescent Psychologist · NPI 1033316005

Dr. Katherine Nguyen Williams, PHD is a Clinical Child & Adolescent Psychologist in San Diego, California. Works from 3 locations. Licensed in California.

Licensed in
CA
In the registry since
2007
Specialties on file
2
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

3665 Kearny Villa Rd Ste 101
San Diego, CA 92123-1953
Phone: (858) 966-5832
Fax: (858) 966-6733
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 8950 Villa La Jolla Dr Ste C101, La Jolla, CA 92037-1727 — (800) 926-8273
  • 200 W Arbor Dr, San Diego, CA 92103-9000 — (800) 926-8273

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY22387 (CA)
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X · Licence PSY22387 (CA)

Record details

NPI number1033316005
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedJuly 2, 2007
Last updated in NPPESJuly 15, 2026
Certification dateJuly 15, 2026

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