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

John Davis McKellar, PHD

Individual provider Addiction (Substance Use Disorder) Psychologist · NPI 1184893778

John Davis McKellar, PHD is an Addiction (Substance Use Disorder) Psychologist in Los Gatos, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008
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

15047 Los Gatos Blvd Ste 200
Los Gatos, CA 95032-2054
Phone: (408) 364-6799
Fax: (408) 378-4510
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Psychologist (primary) Taxonomy 103TA0400X · Licence 18966 (CA)

Record details

NPI number1184893778
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedFebruary 27, 2008
Last updated in NPPESJuly 11, 2014