Psychiatrist | Child & Adolescent Psychiatry

William Edward Mosiman, M.D.

1100 K Ave, La Grande, Oregon, 97850-2131

About William Edward Mosiman

William Edward Mosiman is a psychiatrist based in La Grande, Oregon who is specialized in Child & Adolescent Psychiatry. Active license number of William Edward Mosiman is MD14186 for Psychiatry in Oregon. His current practice location is 1100 K Ave, La Grande. Patients can contact him at 541-962-8868 or can fax him at 541-963-5272. William Edward Mosiman, M.D., specializes in Child & Adolescent Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1497771372.

William Edward Mosiman has done additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.

Practice Information

William Edward Mosiman'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 William Edward Mosiman
Specialization Child & Adolescent Psychiatry
Credentials M.D.
Gender Male
Practice Address: 1100 K Ave,
La Grande, OR - 97850-2131
Fax 541-963-5272

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 Number1497771372
NPI Enumeration Date: 14 Jul, 2006
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 William Edward Mosiman are as mentioned below.

License NumberSpecializationStateStatus
MD14186Psychiatry OregonPrimary
MD14186Child & Adolescent Psychiatry OregonSecondary

Mailing Address

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

William Edward Mosiman
1100 K Ave,
La Grande, OR - 97850-2131
Phone: 541-962-8868
Fax: 541-963-5272

Book an Appointment with William Edward Mosiman

To schedule an appointment, contact William Edward Mosiman at 1100 K Ave, La Grande, Oregon or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William Edward Mosiman:

William Edward Mosiman 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.

Yes, William Edward Mosiman 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.

William Edward Mosiman practices at 1100 K Ave, La Grande, Oregon, 97850-2131.

To schedule an appointment with William Edward Mosiman, please contact the office at 541-962-8868.

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