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

Karen P Williams, PHD

Individual provider Clinical Psychologist · NPI 1619004173

Karen P Williams, PHD is a Clinical Psychologist in Rancho Cucamonga, California. Licensed in California. Registered with an NPI since 2007.

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

10737 Laurel St Ste 230
Rancho Cucamonga, CA 91730-7659
Phone: (909) 989-5556
Fax: (909) 989-5558
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY12198 (CA)
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X · Licence PSY12198 (CA)

Record details

NPI number1619004173
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedFebruary 28, 2007
Last updated in NPPESApril 26, 2023
Certification dateApril 26, 2023

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