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
Mailing address1152 Prunetree Ct, Santa Rosa, CA 95401-4984

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