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

Leslie Gellis, PHD

Individual provider Cognitive & Behavioral Psychologist · NPI 1336552959

Leslie Gellis, PHD is a Cognitive & Behavioral Psychologist in Syracuse, New York. Licensed in New York. Registered with an NPI since 2014.

Licensed in
NY
In the registry since
2014
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

804 University Ave 201
Syracuse, NY 13210-1721
Phone: (315) 443-3595
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cognitive & Behavioral Psychologist (primary) Taxonomy 103TB0200X · Licence 018822-1 (NY)

Record details

NPI number1336552959
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJune 11, 2014
Last updated in NPPESJune 11, 2014

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