Psychologist | Clinical Psychology

Dr. Douglas Demerchant, PSY.D.

620 W Roosevelt Rd Ste D1, Wheaton, Illinois, 60187-2306

About Dr. Douglas Demerchant

Dr. Douglas Demerchant is a psychologist based in Wheaton, Illinois who is specialized in Clinical Psychology. Active license number of Dr. Douglas Demerchant is 071003669 for Clinical Psychology in Illinois. His current practice location is 620 W Roosevelt Rd Ste D1, Wheaton. Patients can contact him at 630-462-1999 or can fax him at 630-462-0069. Dr. Douglas Demerchant, PSY.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1831564228.

Dr. Douglas Demerchant 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. Douglas Demerchant'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. Douglas Demerchant
Specialization Clinical Psychology
Credentials PSY.D.
Gender Male
Practice Address: 620 W Roosevelt Rd Ste D1,
Wheaton, IL - 60187-2306
Fax 630-462-0069

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 Number1831564228
NPI Enumeration Date: 10 Dec, 2015
NPI Last Update On: 10 Dec, 2015

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. Douglas Demerchant are as mentioned below.

License NumberSpecializationStateStatus
071003669Clinical 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. Douglas Demerchant
620 W Roosevelt Rd Ste D1,
Wheaton, IL - 60187-2306
Phone: 630-462-1999
Fax: 630-462-0069

Book an Appointment with Dr. Douglas Demerchant

To schedule an appointment, contact Dr. Douglas Demerchant at 620 W Roosevelt Rd Ste D1, Wheaton, Illinois or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Douglas Demerchant:

Dr. Douglas Demerchant 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. Douglas Demerchant 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. Douglas Demerchant practices at 620 W Roosevelt Rd Ste D1, Wheaton, Illinois, 60187-2306.

To schedule an appointment with Dr. Douglas Demerchant, please contact the office at 630-462-1999.

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