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

Individual provider Clinical Psychologist · NPI 1851743850

Dr. Ryan G Witherspoon, PHD is a Clinical Psychologist in Pasadena, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2016
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

117 E Colorado Blvd Ste 425
Pasadena, CA 91105-3729
Phone: (626) 559-0939
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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 PSY32022 (CA)

Record details

NPI number1851743850
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJuly 1, 2016
Last updated in NPPESJune 29, 2026
Certification dateJune 29, 2026

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