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

Henry S. Mellen, PHD

Individual provider Psychologist · NPI 1043428824

Henry S. Mellen, PHD is a Psychologist in Los Altos, 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.

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Practice location Address checks out

851 Fremont Ave Ste 107
Los Altos, CA 94024-5698
Phone: (650) 989-1256
Fax: (650) 329-1579
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY 20759 (CA)

Record details

NPI number1043428824
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 18, 2007
Last updated in NPPESJuly 8, 2007
Mailing address1488 Hamilton Ave, Palo Alto, CA 94301-3124

Other providers in Los Altos