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

Gregory Diehl Crawford, PSYD

Individual provider Clinical Neuropsychologist · NPI 1427310937

Gregory Diehl Crawford, PSYD is a Clinical Neuropsychologist in Ontario, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2012
Specialties on file
3
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

See every abbreviation used in this directory →

Practice location Address checks out

3350 Shelby St Ste 200
Ontario, CA 91764-5556
Phone: (909) 935-2385
Fax: (909) 935-2685
Show map & directions

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

Specialties & licences

Clinical Neuropsychologist (primary) Taxonomy 103G00000X · Licence PSY28640 (CA)
Psychologist Taxonomy 103T00000X · Licence PSY28640 (CA)
Clinical Psychologist Taxonomy 103TC0700X · Licence 28640 (CA)

Record details

NPI number1427310937
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedJune 11, 2012
Last updated in NPPESApril 2, 2021
Certification dateApril 2, 2021