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

Individual provider Clinical Psychologist · NPI 1881910016

Dr. Gregory Daniel Haggerty, PHD is a Clinical Psychologist in Massapequa, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2010
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

627 Broadway Ste 200
Massapequa, NY 11758-5031
Phone: (516) 551-8655
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 018419 (NY)

Record details

NPI number1881910016
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 13, 2010
Last updated in NPPESApril 13, 2010
Mailing address320 1st Ave, Massapequa Park, NY 11762-1849

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