DR. MARISSA DIACO PSYD
NPI 1245165562
Psychologist in Pelham, NY

Active since June 17, 2026
629 FIFTH AVE STE 109, PELHAM, NY 10803(914) 368-2995 Get Directions Write a Review

NPPES record last updated: June 17, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Marissa Diaco Psyd NPPES

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

DR. MARISSA DIACO PSYD (NPI 1245165562) is an individual psychologist in Pelham, New York, licensed in New York (028063) and active in the NPI registry since June 2026.

NPPES Registry Identity

NPI1245165562
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. MARISSA DIACOCredential: PSYD
Location Address629 FIFTH AVE STE 109Pelham, NY 10803-3708
Mailing Address139 W 74th St Apt 4aNew York, NY 10023-2271
Sole ProprietorNo
Enumeration DateJune 17, 2026
NPPES CertifiedJune 17, 2026
NPI 1245165562 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in NY · 028063
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.
629 FIFTH AVE STE 109, Pelham, NY 10803

Other Providers at the Same Location NPPES 6

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

Social Worker
629 FIFTH AVE STE 109
PELHAM, NY 10803
Psychologist (Clinical Child & Adolescent)
629 FIFTH AVE STE 109
PELHAM, NY 10803
Psychologist (Clinical)
629 FIFTH AVE STE 109
PELHAM, NY 10803
Psychologist (Clinical)
629 FIFTH AVE STE 109
PELHAM, NY 10803
Psychologist (Clinical)
629 FIFTH AVE STE 109
PELHAM, NY 10803
Psychologist
629 FIFTH AVE STE 109
PELHAM, NY 10803

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 Marissa Diaco's NPI number?

The NPI number for Marissa Diaco is 1245165562. It was assigned to this individual provider in the NPPES registry on June 17, 2026.

Where is Marissa Diaco located?

Marissa Diaco practices at 629 Fifth Ave Ste 109, Pelham, NY 10803. The listed phone number is (914) 368-2995.

What is Marissa Diaco'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 Marissa Diaco was last updated on June 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 47 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.