Individual
DR. WILLIAM MARTIN GREENSTADT
Active
Sole proprietor
Yes
Provider details
NPI number
Gender
Man
Credential
PH.D.
Contact information
Practice address
232 MADISON AVE, SUITE 1308, NEW YORK, NY 10016-2901
(212) 686-9256
(212) 686-4104
Mailing address
232 MADISON AVENUE, SUITE 1308, NEW YORK, NY 10016
(212) 686-9256
(212) 686-4104
Taxonomy
Speciality
Code
Description
License number
State
103T00000X
Psychologist
002936-1
NY
103TP0814X
Psychoanalysis Psychologist
Primary
000338-1
NY
Other
Other identifiers
Code
Description
Identifier
Issuer
State
01
—
0001099299
MHN VENDOR NO.
NY
01
—
0097451
GHI PROVIDER NUMBER
NY
Enumeration date
07/25/2006
Last updated
09/11/2025
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