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

Gregory Berlin, PHD

Individual provider Psychologist · NPI 1720650211

Gregory Berlin, PHD is a Psychologist in Greenwich, Connecticut. Practices as a sole proprietor. Registered with an NPI since 2021.

In the registry since
2021
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

55 Holly Hill Ln
Greenwich, CT 06830-6074
Phone: (203) 863-2939
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1720650211
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedJuly 14, 2021
Last updated in NPPESOctober 8, 2021
Certification dateOctober 8, 2021
Mailing address55 Holly Hill Ln, Greenwich, CT 06830-6074

Other providers in Greenwich