Psychologist | Clinical Psychology | 22+ years experience

Dr. John William Allen, PSY.D.

4055 W Peterson Ave, Suite 201, Chicago, Illinois, 60646-6182

About Dr. John William Allen

Dr. John William Allen is a psychologist based in Chicago, Illinois with 22 years of experience in Clinical Psychology. He completed his graduation in 2004. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. His current practice location is 4055 W Peterson Ave, Suite 201, Chicago. Patients can contact him at 773-478-2982 or can fax him at 773-478-8105. Dr. John William Allen, PSY.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1609044080.

Dr. John William Allen 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 William Allen'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 William Allen
Specialization Clinical Psychology
Credentials PSY.D.
Accepts Medicare Assignment Yes
Experience 22+ years
Graduation Year 2004
Gender Male
Practice Address: 4055 W Peterson Ave, Suite 201
Chicago, IL - 60646-6182
Fax 773-478-8105

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.

PAC ID 2264585504
Enrollment ID I20090804000072
NPI Number1609044080
NPI Enumeration Date: 19 Feb, 2008
NPI Last Update On: 19 Feb, 2008

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 William Allen are as mentioned below.

License NumberSpecializationStateStatus
Clinical 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 William Allen
4055 W Peterson Ave, Suite 201
Chicago, IL - 60646-6182
Phone: 773-478-2982
Fax: 773-478-8105

Book an Appointment with Dr. John William Allen

To schedule an appointment, contact Dr. John William Allen at 4055 W Peterson Ave, Suite 201, Chicago, Illinois or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. John William Allen:

Dr. John William Allen 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.

Dr. John William Allen has approximately 22 years of experience in Clinical Psychology.

Yes, Dr. John William Allen accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. John William Allen 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 William Allen practices at 4055 W Peterson Ave, Suite 201, Chicago, Illinois, 60646-6182.

To schedule an appointment with Dr. John William Allen, please contact the office at 773-478-2982.

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