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

Individual provider Cognitive & Behavioral Psychologist · NPI 1386017754

Dr. Justin Collmann, PHD is a Cognitive & Behavioral Psychologist in Sebastopol, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2015
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

435 Petaluma Ave Ste 110E
Sebastopol, CA 95472-4277
Phone: (707) 536-6956
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cognitive & Behavioral Psychologist (primary) Taxonomy 103TB0200X · Licence 27539 (CA)

Record details

NPI number1386017754
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedNovember 7, 2015
Last updated in NPPESNovember 7, 2015

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