Psychologist | Clinical Psychology

Dr. Clayton John Hartmann, PHD

5261 N Yale St, Portland, Oregon, 97203-5259

About Dr. Clayton John Hartmann

Dr. Clayton John Hartmann is a psychologist based in Portland, Oregon who is specialized in Clinical Psychology. Active license number of Dr. Clayton John Hartmann is 3083 for Clinical Psychology in Oregon. His current practice location is 5261 N Yale St, Portland. Patients can contact him at 805-689-6607. Dr. Clayton John Hartmann, PHD, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1093299919.

Dr. Clayton John Hartmann 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. Clayton John Hartmann'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. Clayton John Hartmann
Specialization Clinical Psychology
Credentials PHD
Gender Male
Practice Address: 5261 N Yale St,
Portland, OR - 97203-5259

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 Number1093299919
NPI Enumeration Date: 17 Sep, 2018
NPI Last Update On: 10 Apr, 2022

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. Clayton John Hartmann are as mentioned below.

License NumberSpecializationStateStatus
3083Clinical Psychology OregonPrimary

Mailing Address

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

Dr. Clayton John Hartmann
5261 N Yale St,
Portland, OR - 97203-5259
Phone: 805-689-6607

Book an Appointment with Dr. Clayton John Hartmann

To schedule an appointment, contact Dr. Clayton John Hartmann at 5261 N Yale St, Portland, Oregon or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Clayton John Hartmann:

Dr. Clayton John Hartmann 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. Clayton John Hartmann 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. Clayton John Hartmann practices at 5261 N Yale St, Portland, Oregon, 97203-5259.

To schedule an appointment with Dr. Clayton John Hartmann, please contact the office at 805-689-6607.

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