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

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
Mailing address215 Katonah Ave, Katonah, NY 10536-2138

Other providers in Katonah