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

Mark Douglas Diamond, PHD

Individual provider Clinical Psychologist · NPI 1831247998

Mark Douglas Diamond, PHD is a Clinical Psychologist in Temecula, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

29377 Rancho California Rd Ste 201
Temecula, CA 92591-5206
Phone: (951) 693-2486
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY8771 (CA)

Record details

NPI number1831247998
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 8, 2007
Last updated in NPPESJuly 8, 2007
Mailing address24980 Terreno Dr, Temecula, CA 92590-3989

Other providers in Temecula