Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOHN STUART ABLON PHD
NPI 1629068929
Psychologist in Boston, MA

Active since October 27, 2005
55 FRUIT STREET YAW A 6900, MASSACHUSETTS GENERAL HOSPITAL, BOSTON, MA 02114(617) 724-5055(617) 726-7541 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. John Stuart Ablon Phd NPPES

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

DR. JOHN STUART ABLON PHD (NPI 1629068929) is an individual psychologist in Boston, Massachusetts, licensed in Massachusetts (7542) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1629068929
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. JOHN STUART ABLONCredential: PHD
Location Address55 FRUIT STREET YAW A 6900, MASSACHUSETTS GENERAL HOSPITALBoston, MA 02114
Mailing AddressPo Box 9142, Mass General Physician OrganizationCharlestown, MA 02129-9142 · (617) 724-0287 · Fax (617) 726-2894
Fax(617) 726-7541
Sole ProprietorNo
Enumeration DateOctober 27, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1629068929 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 MA · 7542
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.
55 FRUIT STREET YAW A 6900, Boston, MA 02114

Accepted Insurance

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 Ablon's NPI number?

The NPI number for John Ablon is 1629068929. It was assigned to this individual provider in the NPPES registry on October 27, 2005.

Where is John Ablon located?

John Ablon practices at 55 Fruit Street Yaw A 6900 Massachusetts General Hospital, Boston, MA 02114. The listed phone number is (617) 724-5055.

What is John Ablon's specialty?

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

What insurance does John Ablon accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list John Ablon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Ablon was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 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.