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

Isabelle Evelyne Stierli, PHD

Individual provider Addiction (Substance Use Disorder) Psychologist · NPI 1285969899

Isabelle Evelyne Stierli, PHD is an Addiction (Substance Use Disorder) Psychologist in Berkeley, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2009
Specialties on file
3
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

2340 Ward St 201
Berkeley, CA 94705-1124
Phone: (510) 869-3744
Show map & directions

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

Specialties & licences

Adult Development & Aging Psychologist (primary) Taxonomy 103TA0700X · Licence PSY14837 (CA)
Addiction (Substance Use Disorder) Psychologist Taxonomy 103TA0400X · Licence PSY14837 (CA)
Clinical Psychologist Taxonomy 103TC0700X · Licence PSY14837 (CA)

Record details

NPI number1285969899
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedOctober 15, 2009
Last updated in NPPESOctober 15, 2009

Other providers in Berkeley