Marion Arthur Fossum, MD
Neurology Physician · Medical Lake, WA
Marion Arthur Fossum, MD is a neurology physician with a practice address in Medical Lake, Washington, and NPI 1356875736, issued on Apr 12, 2017. Check the license (Washington 61254901, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Marion Arthur Fossum
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- 61254901 WA
2024012104 MO
ME167370 FL
036.169354 IL
01092935A IN
and 7 more
Self-reported in NPPES; status is on the state search - Practice location
- 1717 S Ritchey RD, Medical Lake, WA 99022
- Phone
- (509) 590-8766
- Enumerated
- Apr 12, 2017
- Record last updated
- Oct 16, 2025
- Medicare enrollment
- Enrolled (PECOS I20240708004123); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 489 in Washington → Look up another NPI →
Verify Marion Arthur Fossum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license 61254901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7 hospitals and group practices
- Central Maine Medical CenterLewiston, ME · Acute Care Hospitals4 of 5 stars
- Franciscan Physician NetworkLafayette, IN
- Freeman-Oak Hill Health SystemJoplin, MO
- Hannibal Regional Healthcare System IncHannibal, MO
- Hendricks County HospitalDanville, IN
- Multicare Health SystemGig Harbor, WA
- Novant Health Medical Group, LLCCharlotte, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Marion Arthur Fossum among 489 neurology physician records in Washington
Marion Arthur Fossum, MD is one of 489 neurology physician records with a practice address in Washington. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 84% of them.
- NPI issued2017 · 84% of these records are older, 12% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2016 · median 2007 among the 351 with a school on file
- Record last updated2025 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Washington
There are 489 neurology physician records in Washington.
All 489 in Washington → Every provider in Medical Lake → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Peter Gilmore, MDYakima, WA 989021376551796
- Tony Lee, MDYakima, WA 989021477692416
- Richard Lukose, DOYakima, WA 989021396063293
- Raymond Sloop, MDYakima, WA 989021548365521
- William Bender, MDSpokane, WA 992011588736979
- David Greeley, MDSpokane, WA 992011386758712
- John Wurst, MDSpokane, WA 992011164513909
- Jason Aldred, M.D.Spokane, WA 992021003969684
Common questions
What is Marion Arthur Fossum, MD's NPI number?
Marion Arthur Fossum, MD's National Provider Identifier (NPI) is 1356875736, issued on Apr 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Marion Arthur Fossum, MD located?
The NPPES record lists a practice address at 1717 S Ritchey RD, Medical Lake, WA, 99022. Phone: (509) 590-8766. Providers update this record themselves, so call before visiting.
How can I verify Marion Arthur Fossum, MD's license?
NPPES lists Washington license number 61254901, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.