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

Dr. Jonathan David Mahrer, PHD

Individual provider Psychologist · NPI 1053341677

Dr. Jonathan David Mahrer, PHD is a Psychologist in Mill Valley, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
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

61 Camino Alto Ste 106
Mill Valley, CA 94941-2910
Phone: (415) 567-7751
Fax: (866) 295-5532
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY 14351 (CA)

Record details

NPI number1053341677
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJuly 3, 2006
Last updated in NPPESApril 18, 2012
Mailing address61 Camino Alto Ste 106, Mill Valley, CA 94941-2910

Other providers in Mill Valley