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

Dr. Jonathan Bruce Grayson, PHD

Individual provider Psychologist · NPI 1346350378

Dr. Jonathan Bruce Grayson, PHD is a Psychologist in Pasadena, California. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
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.

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Practice location Address checks out

4 E Holly St Ste 219
Pasadena, CA 91103-4519
Phone: (626) 639-3994
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PS003671L (PA)

Record details

NPI number1346350378
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedAugust 31, 2006
Last updated in NPPESOctober 20, 2021
Certification dateOctober 20, 2021
Mailing address155 Cordova St Unit 304, Pasadena, CA 91105-2749

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