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

Dr. Mark Westerfield, PSYD

Individual provider Clinical Child & Adolescent Psychologist · NPI 1710505326

Dr. Mark Westerfield, PSYD is a Clinical Child & Adolescent Psychologist in Palo Alto, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2020
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

630 University Ave Ste A
Palo Alto, CA 94301-2019
Phone: (650) 714-7898
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Child & Adolescent Psychologist (primary) Taxonomy 103TC2200X · Licence 31069 (CA)

Record details

NPI number1710505326
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedJuly 9, 2020
Last updated in NPPESJuly 9, 2020
Certification dateJuly 9, 2020

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