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

Ellen Weiss Williams, PHD

Individual provider Clinical Psychologist · NPI 1205888427

Ellen Weiss Williams, PHD is a Clinical Psychologist in Tempe, Arizona. Practices as a sole proprietor. Licensed in Arizona.

Licensed in
AZ
In the registry since
2006
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

7734 S Alder Dr
Tempe, AZ 85284-1644
Phone: (480) 345-7031
Fax: (480) 831-6799
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 462 (AZ)

Record details

NPI number1205888427
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 16, 2006
Last updated in NPPESOctober 26, 2007
Mailing address7734 S Alder Dr, Tempe, AZ 85284-1644

Other providers in Tempe