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

Dr. Gregory Irving Mack, PHD

Individual provider Clinical Psychologist · NPI 1669523106

Dr. Gregory Irving Mack, PHD is a Clinical Psychologist in Yorktown Heights, New York. Licensed in New York. Registered with an NPI since 2007.

Licensed in
NY
In the registry since
2007
Specialties on file
5
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

345 Kear St Ste 202
Yorktown Heights, NY 10598-4425
Phone: (845) 282-3367
Fax: (914) 743-1613
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 016597 (NY)
Forensic Psychologist Taxonomy 103TF0200X · Licence 016597 (NY)
Cognitive & Behavioral Psychologist Taxonomy 103TB0200X · Licence 016597 (NY)
Family Psychologist Taxonomy 103TF0000X · Licence 016597 (NY)
Group Psychotherapy Psychologist Taxonomy 103TP2701X · Licence 016597 (NY)

Record details

NPI number1669523106
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJanuary 12, 2007
Last updated in NPPESFebruary 25, 2017

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