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

Dr. Mary Ann Barr, PHD

Individual provider Prescribing (Medical) Psychologist · NPI 1811102908

Dr. Mary Ann Barr, PHD is a Prescribing (Medical) Psychologist in Mill Valley, 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 →

Practice location Address checks out

277 Cascade Dr
Mill Valley, CA 94941-5025
Phone: (415) 383-9245
Fax: (415) 389-0396
Show map & directions

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

Specialties & licences

Prescribing (Medical) Psychologist (primary) Taxonomy 103TP0016X · Licence PG 5913 (CA)

Record details

NPI number1811102908
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 11, 2007
Last updated in NPPESJuly 8, 2007