Mary Ann K. Arndt, M.D.
Nephrology Physician · Spokane, WA
Mary Ann K. Arndt, M.D. is a nephrology physician with a practice address in Spokane, Washington, and NPI 1750458329, issued on Nov 29, 2006. Check the license (Washington MD30286879, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Mary Ann K. Arndt
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- MD30286879 WA
MD157887 OR
Self-reported in NPPES; status is on the state search - Practice location
- 105 W 8TH Ave, Spokane, WA 99204
- Phone
- (509) 340-0930
- Enumerated
- Nov 29, 2006
- Record last updated
- Sep 13, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (509) 747-2054
- Medicare enrollment
- Enrolled (PECOS I20160926002168); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 284 in Washington → Look up another NPI →
Also registered at 105 W 8TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jamil Abou-Harb, MDPediatric Gastroenterology Physician1891712980
- Adnan Amin, MDPsychiatry Physician1508913492
- Kelly Anderson, MSN, ARNP-CFamily Nurse Practitioner1073844403
- Howard Ashby, MDPsychiatry Physician1245456102
- Marie Atkinson, M.D.Neurology Physician1447370168
Verify Mary Ann K. Arndt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD30286879Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Providence Health And Services WashingtonSpokane, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Ann K. Arndt among 284 nephrology physician records in Washington
Mary Ann K. Arndt, M.D. is one of 284 nephrology 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 56% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2002 · median 2003 among the 213 with a school on file
- Record last updated2016 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Washington
There are 284 nephrology physician records in Washington.
All 284 in Washington → Every provider in Spokane → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Richard Carson, MDSpokane, WA 992041114929668
- Nelson Chow, MDSpokane, WA 992041427142470
- Nelio Guzman Aguayo, M.D.Spokane, WA 992041124266184
- Nathalie Jean, MDSpokane, WA 992041700134293
- Nasir Khan, M.D.Spokane, WA 992041285061226
- Ashutosh Mahajan, MDSpokane, WA 992041932140183
- Krishna Malireddi, MDSpokane, WA 992041780778746
- Henry Mroch, MDSpokane, WA 992041245324219
Common questions
What is Mary Ann K. Arndt, M.D.'s NPI number?
Mary Ann K. Arndt, M.D.'s National Provider Identifier (NPI) is 1750458329, issued on Nov 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ann K. Arndt, M.D. located?
The NPPES record lists a practice address at 105 W 8TH Ave, Spokane, WA, 99204. Phone: (509) 340-0930. Providers update this record themselves, so call before visiting.
How can I verify Mary Ann K. Arndt, M.D.'s license?
NPPES lists Washington license number MD30286879, 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.