Individual Healthcare Provider
Marion Arthur Fossum, MD
Provider's NPPES record last updated: October 16, 2025
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1356875736
- Primary Specialty
- Psychiatry & Neurology — Neurology
- Practice Location
- Medical Lake, Washington
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 19, 2026, 8:10 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Psychiatry & Neurology
Neurology
Allopathic & Osteopathic Physicians
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
Taxonomy code 2084N0400X Psychiatry & Neurology
Clinical Neurophysiology
Allopathic & Osteopathic Physicians
Clinical Neurophysiology is a subspecialty with psychiatric or neurologic expertise in the diagnosis and management of central, peripheral, and autonomic nervous system disorders using combined clinical evaluation and electrophysiologic testing such as electroencephalography (EEG), electromyography (EMG), and nerve conduction studies (NCS).
Taxonomy code 2084N0600XPsychiatry & Neurology
Epilepsy
Allopathic & Osteopathic Physicians
Epilepsy is a subspecialty of neurology focused on the diagnosis and treatment of patients with epilepsy, including new-onset, medically refractory epilepsy, psychogenic nonepileptic seizures, and epilepsy in special populations (the elderly, women, patients with co-morbidities). Epilepsy is a multidisciplinary field that provides comprehensive care of the patient.<br/>
Taxonomy code 2084E0001X
Provider-Reported License Information
- Psychiatry & Neurology (Missouri)
- 2024012104
- Psychiatry & Neurology (Mississippi)
- 33801
- Psychiatry & Neurology (Wisconsin)
- 83574-20
- Psychiatry & Neurology (Washington)
- 61254901
- Psychiatry & Neurology (North Carolina)
- 2024-00610
- Psychiatry & Neurology (Nevada)
- 26243
- Psychiatry & Neurology (Washington)
- 61254901
- Psychiatry & Neurology (Florida)
- ME167370
- Psychiatry & Neurology (Virginia)
- 0101281448
- Psychiatry & Neurology (New Jersey)
- 25MA12260400
- Psychiatry & Neurology (Washington)
- 61254901
- Psychiatry & Neurology (Illinois)
- 036.169354
- Psychiatry & Neurology (Oregon)
- MD220784
- Psychiatry & Neurology (Indiana)
- 01092935A
Practice Locations
Practice Location
1717 S Ritchey Rd
Medical Lake, Washington 99022-8792
Phone: (509) 590-8766
Additional Practice Location
19300 Sw 65th Ave
Tualatin, Oregon 97062-7706
Phone: (503) 692-1212
Additional Practice Location
1102 W 32nd St
Joplin, Missouri 64804-3503
Phone: (417) 347-4570
Additional Practice Location
90 Presidential Plz # 4
Syracuse, New York 13202-2240
Phone: (315) 464-4243
Additional Practice Location
6000 Hospital Dr
Hannibal, Missouri 63401-6887
Phone: (573) 629-3342
Fax: (573) 629-3432
Additional Practice Location
1701 S Creasy Ln
Lafayette, Indiana 47905-4972
Phone: (765) 502-4400
Fax: (765) 502-4401
Additional Practice Location
2041 Georgia Ave Nw # 5b05
Washington, District of Columbia 20060
Phone: (202) 865-6611
Additional Practice Location
200 Hawthorne Ln
Charlotte, North Carolina 28204-2515
Phone: (704) 384-9437
Fax: (704) 384-9440
Record Information
- Enumeration Date
- April 12, 2017
- Provider's NPPES Record Last Updated
- October 16, 2025
- Certification Date
- October 16, 2025
- NPISignal NPPES Dataset
- August 2026
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