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

Individual provider Psychologist · NPI 1508073131

Dr. John Isaac Gerson, PHD is a Psychologist in Katonah, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
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

215 Katonah Ave
Katonah, NY 10536-2138
Phone: (914) 232-4702
Fax: (914) 232-0257
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 013534 (NY)

Record details

NPI number1508073131
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 16, 2007
Last updated in NPPESJuly 8, 2007

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