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

Martin N. Seif, Ph D , Psychologist, PC

Organization Clinical Psychologist · NPI 1982992491

Martin N. Seif, Ph D , Psychologist, PC provides Clinical Psychologist services in Greenwich, Connecticut. Licensed in New York. Registered with an NPI since 2011.

Licensed in
NY
In the registry since
2011
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

270 Greenwich Ave
Greenwich, CT 06830-6530 Not confirmed with CMS for 14 years — call before visiting
Phone: (914) 907-8023
Fax: (203) 629-1212
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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 5457 (NY)

Record details

NPI number1982992491
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Martin Seif — President · (914) 907-8023
NPI enumeratedJuly 18, 2011
Last updated in NPPESApril 24, 2012
Mailing address270 Greenwich Ave, Greenwich, CT 06830-6530

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