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

Claire Oxtoby, PHD

Individual provider Psychologist · NPI 1154679868

Claire Oxtoby, PHD is a Psychologist in Rancho Cucamonga, California. Registered with an NPI since 2012.

In the registry since
2012
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

8300 Utica Ave Ste 245
Rancho Cucamonga, CA 91730-3852
Phone: (910) 297-1740
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1154679868
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedAugust 28, 2012
Last updated in NPPESSeptember 16, 2020
Certification dateSeptember 16, 2020
Mailing address741 Brookside Ln, Sierra Madre, CA 91024-1425

Other providers in Rancho Cucamonga