Psychologist | Clinical Psychology

Dr. John George Duffy, PSYD

10 West Calendar Avenue, Suite D, La Grange, Illinois, 60525

About Dr. John George Duffy

Dr. John George Duffy is a psychologist based in La Grange, Illinois who is specialized in Clinical Psychology. Active license number of Dr. John George Duffy is 36-4398657 for Clinical Psychology in Illinois. His current practice location is 10 West Calendar Avenue, Suite D, La Grange. Patients can contact him at 847-951-8000. Dr. John George Duffy, PSYD, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1467023242.

Dr. John George Duffy is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. John George Duffy's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. John George Duffy
Specialization Clinical Psychology
Credentials PSYD
Gender Male
Practice Address: 10 West Calendar Avenue, Suite D
La Grange, IL - 60525

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1467023242
NPI Enumeration Date: 02 Jul, 2021
NPI Last Update On: 02 Jul, 2021

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. John George Duffy are as mentioned below.

License NumberSpecializationStateStatus
36-4398657Clinical Psychology IllinoisPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. John George Duffy
10 West Calendar Avenue, Suite D
La Grange, IL - 60525
Phone: 847-951-8000

Book an Appointment with Dr. John George Duffy

To schedule an appointment, contact Dr. John George Duffy at 10 West Calendar Avenue, Suite D, La Grange, Illinois or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. John George Duffy:

Dr. John George Duffy is a psychologist specializing in Clinical Psychology. He is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. John George Duffy is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. John George Duffy practices at 10 West Calendar Avenue, Suite D, La Grange, Illinois, 60525.

To schedule an appointment with Dr. John George Duffy, please contact the office at 847-951-8000.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.