Psychologist | Cognitive & Behavioral Psychology

Dr. Kenneth Mark Derby, PH.D.

1124 E 35th Ave, Spokane, Washington, 99203-3168

About Dr. Kenneth Mark Derby

Dr. Kenneth Mark Derby is a psychologist based in Spokane, Washington who is specialized in Cognitive & Behavioral Psychology. Active license number of Dr. Kenneth Mark Derby is 2204 for Clinical Psychology in Washington. His current practice location is 1124 E 35th Ave, Spokane. Patients can contact him at 509-747-7460 or can fax him at 509-323-5965. Dr. Kenneth Mark Derby, PH.D., specializes in Cognitive & Behavioral Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1679611420.

Dr. Kenneth Mark Derby has variety of professional responsibilities, including assessment (identifying, diagnosing, and conceptualizing problems experienced by individuals or groups), intervention (creating, implementing and evaluating interventions designed to induce positive change) and consultation. Cognitive Behavioral Psychologists also participates in research, education, training, and clinical practice including a range of issues and populations.

Practice Information

Dr. Kenneth Mark Derby'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. Kenneth Mark Derby
Specialization Cognitive & Behavioral Psychology
Credentials PH.D.
Gender Male
Practice Address: 1124 E 35th Ave,
Spokane, WA - 99203-3168
Fax 509-323-5965

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 Number1679611420
NPI Enumeration Date: 02 Feb, 2007
NPI Last Update On: 11 Sep, 2025

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. Kenneth Mark Derby are as mentioned below.

License NumberSpecializationStateStatus
2204Clinical Psychology WashingtonPrimary
2204Cognitive & Behavioral Psychology WashingtonSecondary

Mailing Address

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

Dr. Kenneth Mark Derby
1124 E 35th Ave,
Spokane, WA - 99203-3168
Phone: 509-747-7460
Fax: 509-323-5965

Book an Appointment with Dr. Kenneth Mark Derby

To schedule an appointment, contact Dr. Kenneth Mark Derby at 1124 E 35th Ave, Spokane, Washington or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Kenneth Mark Derby:

Dr. Kenneth Mark Derby 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. Kenneth Mark Derby 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. Kenneth Mark Derby practices at 1124 E 35th Ave, Spokane, Washington, 99203-3168.

To schedule an appointment with Dr. Kenneth Mark Derby, please contact the office at 509-747-7460.

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