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

Paul D Guest, PHD

Individual provider Clinical Psychologist · NPI 1487606513

Paul D Guest, PHD is a Clinical Psychologist in Patton, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

3102 E Highland Ave
Patton, CA 92369
Phone: (909) 425-7000
Fax: (909) 425-7520
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY10903 (CA)

Record details

NPI number1487606513
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedMay 17, 2006
Last updated in NPPESJuly 13, 2026
Mailing address1600 9th Street, Room 205 Mailstop 2-3, Sacramento, CA 95814-6414

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