DR. JOHN GEORGE DUFFY PSYD
NPI 1467023242
Psychologist - Clinical in La Grange, IL

Q: What is John Duffy's NPI number?

The NPI number for John Duffy is 1467023242. It was assigned to this individual provider in the NPPES registry on July 2, 2021.

Q: What is John Duffy's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for John Duffy was last updated on July 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since July 02, 2021

10 WEST CALENDAR AVENUE, SUITE D, LA GRANGE, IL 60525(847) 951-8000 Get Directions Write a Review

NPPES record last updated: July 2, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. John George Duffy Psyd NPPES

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

DR. JOHN GEORGE DUFFY PSYD (NPI 1467023242) is an individual clinical provider in La Grange, Illinois, licensed in Illinois (36-4398657) and active in the NPI registry since July 2021.

NPPES Registry Identity

NPI1467023242

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. JOHN GEORGE DUFFYCredential: PSYD

Location Address10 WEST CALENDAR AVENUE, SUITE DLa Grange, IL 60525

Mailing Address10 West Calendar Avenue, Suite DLa Grange, IL 60525 · (847) 951-8000

Phone(847) 951-8000

Sole ProprietorYes

Enumeration DateJuly 2, 2021

NPPES CertifiedJuly 2, 2021

✔ NPI 1467023242 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in IL · 36-4398657

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

10 WEST CALENDAR AVENUE, La Grange, IL 60525

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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 Duffy's NPI number?

The NPI number for John Duffy is 1467023242. It was assigned to this individual provider in the NPPES registry on July 2, 2021.

Where is John Duffy located?

John Duffy practices at 10 West Calendar Avenue Suite D, La Grange, IL 60525. The listed phone number is (847) 951-8000.

What is John Duffy's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for John Duffy was last updated on July 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.