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

Greg Klassen, PSYD

Individual provider Psychologist · NPI 1083100093

Greg Klassen, PSYD is a Psychologist in Lake Forest, California. Licensed in California. Registered with an NPI since 2018.

Licensed in
CA
In the registry since
2018
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

23792 Rockflield Blvd Ste 290
Lake Forest, CA 92630-2819
Phone: (949) 303-8932
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY18605 (CA)

Record details

NPI number1083100093
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorNo
NPI enumeratedJuly 3, 2018
Last updated in NPPESJuly 3, 2018
Mailing address23792 Rockflield Boulevard, Suite 290, Lake Forest, CA 92630-2819

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