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

Dr. Daniel J. Volk, PHD

Individual provider Clinical Psychologist · NPI 1659342590

Dr. Daniel J. Volk, PHD is a Clinical Psychologist in Mill Valley, California. Licensed in California. Registered with an NPI since 2006.

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

6 Knoll Ln Ste F
Mill Valley, CA 94941-2326
Phone: (415) 389-0235
Fax: (510) 521-8253
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY8948 (CA)

Record details

NPI number1659342590
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJanuary 30, 2006
Last updated in NPPESMarch 20, 2008
Mailing address57 Montford Ave, Mill Valley, CA 94941-3335

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