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

John D. Sawyer, PHD

Organization Clinical Psychologist · NPI 1649462276

John D. Sawyer, PHD is a Clinical Psychologist in Fullerton, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007

Practice location Address checks out

680 Langsdorf Dr Ste 219
Fullerton, CA 92831-3702
Phone: (714) 871-9732
Fax: (714) 871-4561
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY 11021 (CA)

Record details

NPI number1649462276
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Alison Nathan — Clinical Psychologist · (714) 871-9732
Other names Nathan & Sawyer
NPI enumeratedAugust 17, 2007
Last updated in NPPESAugust 17, 2007
Mailing address680 Langsdorf Dr, Suite 219, Fullerton, CA 92831-3702

Other providers in Fullerton