Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

ALEXANDER GRIESHABER
NPI 1700780947
Psychologist in New York, NY

Active since October 02, 2026
6 E 39TH ST STE 1000, NEW YORK, NY 10016(212) 547-8861 Get Directions Write a Review

NPPES record added: October 2, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Alexander Grieshaber NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALEXANDER GRIESHABER (NPI 1700780947) is an individual psychologist in New York, New York and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1700780947
Entity TypeIndividual
Primary Taxonomy103T00000X
Provider Legal NameALEXANDER GRIESHABER
Location Address6 E 39TH ST STE 1000New York, NY 10016-0112
Mailing Address3752 80th St Apt 4cJackson Heights, NY 11372-9007
Sole ProprietorNo
Enumeration DateOctober 2, 2026
NPPES CertifiedOctober 2, 2026
✔ NPI 1700780947 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
6 E 39TH ST STE 1000, New York, NY 10016

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Social Worker (Clinical)
6 E 39TH ST STE 1000
NEW YORK, NY 10016
Podiatrist
6 E 39TH ST STE 1000
NEW YORK, NY 10016
Internal Medicine (Cardiovascular Disease)
6 E 39TH ST STE 1000
NEW YORK, NY 10016

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alexander Grieshaber's NPI number?

The NPI number for Alexander Grieshaber is 1700780947. It was assigned to this individual provider in the NPPES registry on October 2, 2026.

Where is Alexander Grieshaber located?

Alexander Grieshaber practices at 6 E 39th St Ste 1000, New York, NY 10016. The listed phone number is (212) 547-8861.

What is Alexander Grieshaber's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

When was this NPI record last updated?

The NPPES record for Alexander Grieshaber was last updated on October 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.