Psychologist | General Psychology | 30+ years experience

Dr. Mark Thomas Summerson, PH.D.

254 E Main St, Suite 226, Pullman, Washington, 99163-2678

About Dr. Mark Thomas Summerson

Dr. Mark Thomas Summerson is a psychologist based in Pullman, Washington with 30 years of experience in General Psychology. He completed his graduation in 1996. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Mark Thomas Summerson is WA2258 for General Psychology in Washington. His current practice location is 254 E Main St, Suite 226, Pullman. Patients can contact him at 509-330-5456 or can fax him at 509-561-6229. Dr. Mark Thomas Summerson, PH.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1932122934.

Dr. Mark Thomas Summerson is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Practice Information

Dr. Mark Thomas Summerson'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. Mark Thomas Summerson
Specialization General Psychology
Credentials PH.D.
Accepts Medicare Assignment Yes
Experience 30+ years
Graduation Year 1996
Gender Male
Practice Address: 254 E Main St, Suite 226
Pullman, WA - 99163-2678
Fax 509-561-6229

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.

PAC ID 9133312580
Enrollment ID I20101019000329
NPI Number1932122934
NPI Enumeration Date: 25 Jul, 2006
NPI Last Update On: 06 Apr, 2016

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. Mark Thomas Summerson are as mentioned below.

License NumberSpecializationStateStatus
WA2258General Psychology WashingtonPrimary

Mailing Address

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

Dr. Mark Thomas Summerson
254 E Main St, Suite 226
Pullman, WA - 99163-2678
Phone: 509-330-5456
Fax: 509-561-6229

Book an Appointment with Dr. Mark Thomas Summerson

To schedule an appointment, contact Dr. Mark Thomas Summerson at 254 E Main St, Suite 226, Pullman, Washington or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Mark Thomas Summerson:

Dr. Mark Thomas Summerson is a psychologist specializing in General Psychology. He is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Dr. Mark Thomas Summerson has approximately 30 years of experience in General Psychology.

Yes, Dr. Mark Thomas Summerson accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. Mark Thomas Summerson 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. Mark Thomas Summerson practices at 254 E Main St, Suite 226, Pullman, Washington, 99163-2678.

To schedule an appointment with Dr. Mark Thomas Summerson, please contact the office at 509-330-5456.

Reviews & Feedback

Have you visited Dr. Mark Thomas Summerson? Share your experience to help others looking for a psychologist in Pullman, WA.

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