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

Dr. Douglas Wayne Larson, PHD

Individual provider Clinical Psychologist · NPI 1801011580

Dr. Douglas Wayne Larson, PHD is a Clinical Psychologist in Colton, 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.

See every abbreviation used in this directory →

Practice location Address checks out

1430 E Cooley Dr Ste 209
Colton, CA 92324-3934
Phone: (909) 798-8999
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY9281 (CA)

Record details

NPI number1801011580
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 16, 2007
Last updated in NPPESJuly 8, 2007
Mailing address11454 Golden Gate Dr, Yucaipa, CA 92399-9705