Psychologist | Clinical Psychology

Dr. Janis Clark Johnston, ED.D.

424 Iowa St, Oak Park, Illinois, 60302-2230

About Dr. Janis Clark Johnston

Dr. Janis Clark Johnston is a psychologist based in Oak Park, Illinois who is specialized in Clinical Psychology. Her current practice location is 424 Iowa St, Oak Park. Patients can contact her at 708-848-0250 or can fax her at 708-524-9126. Dr. Janis Clark Johnston, ED.D., specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1245398163.

Dr. Janis Clark Johnston 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). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Janis Clark Johnston'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. Janis Clark Johnston
Specialization Clinical Psychology
Credentials ED.D.
Gender Female
Practice Address: 424 Iowa St,
Oak Park, IL - 60302-2230
Fax 708-524-9126

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 Number1245398163
NPI Enumeration Date: 04 Dec, 2006
NPI Last Update On: 09 Jul, 2007

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. Janis Clark Johnston 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. Janis Clark Johnston
424 Iowa St,
Oak Park, IL - 60302-2230
Phone: 708-848-0250
Fax: 708-524-9126

Book an Appointment with Dr. Janis Clark Johnston

To schedule an appointment, contact Dr. Janis Clark Johnston at 424 Iowa St, Oak Park, Illinois or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Janis Clark Johnston:

Dr. Janis Clark Johnston is a psychologist specializing in Clinical Psychology. She 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). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Janis Clark Johnston 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. Janis Clark Johnston practices at 424 Iowa St, Oak Park, Illinois, 60302-2230.

To schedule an appointment with Dr. Janis Clark Johnston, please contact the office at 708-848-0250.

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