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

Dr. Gregg Steven Sashkin, PHD

Individual provider Clinical Psychologist · NPI 1235227240

Dr. Gregg Steven Sashkin, PHD is a Clinical Psychologist in Lake Oswego, Oregon. Practices as a sole proprietor. Licensed in Oregon.

Licensed in
OR
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.

See every abbreviation used in this directory →

Practice location Address checks out

14523 Westlake Dr Ste 11
Lake Oswego, OR 97035-7700
Phone: (503) 639-9956
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 0638 (OR)

Record details

NPI number1235227240
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedOctober 11, 2006
Last updated in NPPESJuly 8, 2007

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