Psychiatrist | 20+ years experience

Mark Howard Duncan, MD

4225 Roosevelt Way Ne, Suite 306, Seattle, Washington, 98105-6099

About Mark Howard Duncan

Mark Howard Duncan is a psychiatrist based in Seattle, Washington with 20 years of experience in Psychiatry. He completed his graduation from Rush Medical College Of Rush University in 2006. He is also affiliated with hospitals like He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Mark Howard Duncan is MD60101453 for Psychiatry in Washington. His current practice location is 4225 Roosevelt Way Ne, Suite 306, Seattle. Patients can contact him at 206-598-7792. Mark Howard Duncan, MD, specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1871791913.

Mark Howard Duncan specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Practice Information

Mark Howard Duncan'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 Mark Howard Duncan
Specialization Psychiatry
Credentials MD
Accepts Medicare Assignment Yes
Experience 20+ years
Medical School Attended Rush Medical College Of Rush University
Graduation Year 2006
Gender Male
Practice Address: 4225 Roosevelt Way Ne, Suite 306
Seattle, WA - 98105-6099

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 5496993982
Enrollment ID I20130522000383
NPI Number1871791913
NPI Enumeration Date: 10 Jul, 2007
NPI Last Update On: 07 Aug, 2013

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 Mark Howard Duncan are as mentioned below.

License NumberSpecializationStateStatus
MD60101453Psychiatry WashingtonPrimary

Hospital Affiliation

Doctors are affiliated to many hospitals whom they worked with in the past or are presently working with. One doctor can be affiliated to four to five hospitals at a time.
Hospital Name (CCN) StateHospital Type
(500008)Seattle, WAAcute Care Hospital

Group Practice

Group practices are practice of medicine by a group of healthcare professionals who share their premises and other resources. Following list states all the group name with which Mark Howard Duncan is associated with along with the number of members in that group.
Organization Name (Group PAC ID) Members
Association Of University Physicians (0446162697)2757

Other Medical Identifiers

Other professional identifiers associated with Mark Howard Duncan such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
1871791913MedicaidWashington

Mailing Address

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

Mark Howard Duncan
Po Box 50095,
Seattle, WA - 98145-5095
Phone: 206-543-6420

Book an Appointment with Mark Howard Duncan

To schedule an appointment, contact Mark Howard Duncan at 4225 Roosevelt Way Ne, Suite 306, Seattle, Washington or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mark Howard Duncan:

Mark Howard Duncan is a psychiatrist specializing in Psychiatry. He specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Mark Howard Duncan completed his education (MD) from Rush Medical College Of Rush University in 2006.

Mark Howard Duncan has approximately 20 years of experience in Psychiatry.

Yes, Mark Howard Duncan accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Mark Howard Duncan 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.

Mark Howard Duncan practices at 4225 Roosevelt Way Ne, Suite 306, Seattle, Washington, 98105-6099.

To schedule an appointment with Mark Howard Duncan, please contact the office at 206-598-7792.

Reviews & Feedback

Have you visited Mark Howard Duncan? Share your experience to help others looking for a psychiatrist in Seattle, WA.

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