Psychologist | Clinical Psychology

Dr. Darren Marshall Janzen, PSY.D.

707 Sw Gaines St, Mail Code Cdrc, Portland, Oregon, 97239-2901

About Dr. Darren Marshall Janzen

Dr. Darren Marshall Janzen is a psychologist based in Portland, Oregon who is specialized in Clinical Psychology. Active license number of Dr. Darren Marshall Janzen is PSY-202344 for Clinical Psychology in Idaho. His current practice location is 707 Sw Gaines St, Mail Code Cdrc, Portland. Patients can contact him at 503-494-3526 or can fax him at 503-494-6868. Dr. Darren Marshall Janzen, PSY.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1548393689.

Dr. Darren Marshall Janzen 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. Darren Marshall Janzen'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. Darren Marshall Janzen
Specialization Clinical Psychology
Credentials PSY.D.
Gender Male
Practice Address: 707 Sw Gaines St, Mail Code Cdrc
Portland, OR - 97239-2901
Fax 503-494-6868

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 Number1548393689
NPI Enumeration Date: 14 Mar, 2007
NPI Last Update On: 08 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. Darren Marshall Janzen are as mentioned below.

License NumberSpecializationStateStatus
PSY-202344Clinical Psychology IdahoPrimary

Mailing Address

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

Dr. Darren Marshall Janzen
707 Sw Gaines St, Mail Code Cdrc
Portland, OR - 97239-2901
Phone: 503-494-3526
Fax: 503-494-6868

Book an Appointment with Dr. Darren Marshall Janzen

To schedule an appointment, contact Dr. Darren Marshall Janzen at 707 Sw Gaines St, Mail Code Cdrc, Portland, Oregon or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Darren Marshall Janzen:

Dr. Darren Marshall Janzen 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. Darren Marshall Janzen 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. Darren Marshall Janzen practices at 707 Sw Gaines St, Mail Code Cdrc, Portland, Oregon, 97239-2901.

To schedule an appointment with Dr. Darren Marshall Janzen, please contact the office at 503-494-3526.

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