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

Richard B. Addison, PHD

Individual provider Psychologist · NPI 1891817201

Richard B. Addison, PHD is a Psychologist in Santa Rosa, 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

862 3rd St
Santa Rosa, CA 95404-4529
Phone: (707) 576-9813
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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 9035 (CA)

Record details

NPI number1891817201
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 5, 2007
Last updated in NPPESJuly 8, 2007
Mailing address862 3rd St, Santa Rosa, CA 95404-4529

Other providers in Santa Rosa