JOHN THOMASSEN PHD
NPI 1881747020
Psychologist in Rochester, NY

Active since January 19, 2007
103 WHITE SPRUCE BLVD, ROCHESTER, NY 14623(585) 292-5830 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About John Thomassen Phd NPPES

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

JOHN THOMASSEN PHD (NPI 1881747020) is an individual psychologist in Rochester, New York, licensed in New York (009938-1) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1881747020
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameJOHN THOMASSENCredential: PHD
Location Address103 WHITE SPRUCE BLVDRochester, NY 14623-1610
Mailing Address831 W Bloomfield RdHoneoye Falls, NY 14472-9326
Sole ProprietorYes
Enumeration DateJanuary 19, 2007
Last NPPES UpdateJuly 9, 2007
NPI 1881747020 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 · 009938-1
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.
103 WHITE SPRUCE BLVD, Rochester, NY 14623

Other Identifiers 5

Other156779FCNY · Preferred Care
Medicare ID-Type UnspecifiedRA5318NY · Medicare B
Other7283460NY · Aenta
Medicare UPINR53386NY
Other027548Value Options

Other Providers at the Same Location NPPES 20

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

Counselor (Mental Health)
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623
Psychologist
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623
Counselor (Mental Health)
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623
Social Worker
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623
Social Worker (Clinical)
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623
Social Worker
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623
Counselor (Mental Health)
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623
Occupational Therapist
103 WHITE SPRUCE BLVD
ROCHESTER, NY 14623

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 John Thomassen's NPI number?

The NPI number for John Thomassen is 1881747020. It was assigned to this individual provider in the NPPES registry on January 19, 2007.

Where is John Thomassen located?

John Thomassen practices at 103 White Spruce Blvd, Rochester, NY 14623. The listed phone number is (585) 292-5830.

What is John Thomassen'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 John Thomassen was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.