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

David Sitzer, PHD

Individual provider Psychologist · NPI 1619091253

David Sitzer, PHD is a Psychologist in Palo Alto, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
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

667 Lytton Ave
Palo Alto, CA 94301-1335
Phone: (650) 269-0657
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY 13538 (CA)

Record details

NPI number1619091253
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMarch 19, 2007
Last updated in NPPESJuly 18, 2025
Certification dateAugust 31, 2020

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