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

Individual provider Psychologist · NPI 1093886210

Dr. Marshall Stephen Harth, PHD is a Psychologist in Ridgewood, New Jersey. Practices as a sole proprietor. Licensed in New Jersey and New York.

Licensed in
NJ, NY
In the registry since
2006
Specialties on file
2
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

1172 E Ridgewood Ave Ste 4
Ridgewood, NJ 07450-3936
Phone: (201) 684-0942
Fax: (201) 684-0941
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 35SI00436400 (NJ)
Psychologist Taxonomy 103T00000X · Licence 005016 (NY)

Record details

NPI number1093886210
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedNovember 10, 2006
Last updated in NPPESJuly 8, 2007
Mailing address1172 E Ridgewood Ave, Suite 4, Ridgewood, NJ 07450-3936

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