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WILLIAM EDWARD MOSIMAN M.D.
NPI 1497771372
Psychiatry & Neurology - Psychiatry in La Grande, OR

Active since July 14, 2006
1100 K AVE, LA GRANDE, OR 97850(541) 962-8868(541) 963-5272 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About William Edward Mosiman M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM EDWARD MOSIMAN M.D. (NPI 1497771372) is an individual psychiatry provider in La Grande, Oregon, licensed in Oregon (MD14186) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1497771372
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameWILLIAM EDWARD MOSIMANCredential: M.D.
Location Address1100 K AVELa Grande, OR 97850-2131
Mailing Address1100 K AveLa Grande, OR 97850-2131 · (541) 962-8868 · Fax (541) 963-5272
Phone(541) 962-8868
Fax(541) 963-5272
Sole ProprietorNo
Enumeration DateJuly 14, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1497771372 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in OR · MD14186
Definition
A Psychiatrist 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.
Also ListedPsychiatry & Neurology · Child & Adolescent PsychiatryTaxonomy 2084P0804X · License MD14186 (OR)
1100 K AVE, La Grande, OR 97850
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MRS. CASSIDY CHRISTOPHER BS
Social Worker
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 962-8800
YVONNE C CARROLL RN
Registered Nurse (Case Management)
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 962-8800
DAYNEEN KOOPMAN MA, QMHP
Counselor (Mental Health)
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 963-4184
ELIZABETH D SPICER
Social Worker
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 962-8877
MRS. LORINDA BLAKELY RN
Registered Nurse
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 962-8801
MRS. KIM A. MILLER
Counselor (Addiction (Substance Use Disorder))
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 962-8830
MS. NANCY BACHMAN MS, PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 962-8861
RACHELLE LEQUERICA RN
Registered Nurse (Community Health)
1100 K AVE
LA GRANDE, OR 97850
Union County (541) 962-8800

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Mosiman's NPI number?

The NPI number for William Mosiman is 1497771372. It was assigned to this individual provider in the NPPES registry on July 14, 2006.

Where is William Mosiman located?

William Mosiman practices at 1100 K Ave, La Grande, OR 97850. The listed phone number is (541) 962-8868.

What is William Mosiman's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for William Mosiman was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.