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

Greenwich Avenue Psychiatry, PC

Organization Psychiatry Physician · NPI 1033819453

Greenwich Avenue Psychiatry, PC is a Psychiatry Physician in Old Greenwich, Connecticut. Registered with an NPI since 2023.

In the registry since
2023
Specialties on file
2
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

3 W End Ave Ste 111
Old Greenwich, CT 06870-1640
Phone: (917) 540-0230
Fax: (917) 900-1602
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Child & Adolescent Psychiatry Physician (primary) Taxonomy 2084P0804X
Psychiatry Physician Taxonomy 2084P0800X

Record details

NPI number1033819453
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Marc Halperin — President · (917) 540-0230
NPI enumeratedMarch 6, 2023
Last updated in NPPESJune 4, 2025
Certification dateJune 4, 2025
Mailing address3 W End Ave Ste 111, Old Greenwich, CT 06870-1640

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