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

Dr. Judith Linzer, PHD

Individual provider Psychologist · NPI 1487879268

Dr. Judith Linzer, PHD is a Psychologist in Castro Valley, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
Specialties on file
5
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

20200 Redwood Rd Ste 2
Castro Valley, CA 94546
Phone: (510) 887-8819
Fax: (510) 655-7974
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Forensic Psychologist (primary) Taxonomy 103TF0200X · Licence PSY9833 (CA)
Psychologist Taxonomy 103T00000X · Licence PSY9833 (CA)
Clinical Psychologist Taxonomy 103TC0700X · Licence PSY9833 (CA)
Clinical Child & Adolescent Psychologist Taxonomy 103TC2200X · Licence PSY9833 (CA)
Family Psychologist Taxonomy 103TF0000X · Licence PSY9833 (CA)

Record details

NPI number1487879268
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedApril 16, 2007
Last updated in NPPESSeptember 11, 2025
Mailing address4096 Piedmont Ave, Suite 320, Oakland, CA 94611

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