NPPES file of Aug 9, 2026

John L. Musa, MD

Nephrology Physician · Spokane, WA

John L. Musa, MD is a nephrology physician with a practice address in Spokane, Washington, and NPI 1154314367, issued on Aug 24, 2005. Check the license (Washington MD00040621, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1154314367
Name
John L. Musa
Credential
MD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
MD00040621 WA
Self-reported in NPPES; status is on the state search
Practice location
605 E Holland Ave, Spokane, WA 99218
Phone
(509) 838-2531
Enumerated
Aug 24, 2005
Record last updated
Apr 11, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(509) 755-6580
Medicaid ID
8291528 WA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 605 E Holland Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Catharine Asay, MA, MS, LMHC, NCCMental Health Counselor1649679218
  2. Allison Bennett, LCSW-CClinical Social Worker1689943557
  3. Chris Chaffin, DDSDentist1013912864
  4. Kawal Chester, M.D.Medical Oncology Physician1619963600
  5. Jason Deville, D.O.Nephrology Physician1255440459
  6. Mark Didier, MDFamily Medicine Physician1255333647

Verify John L. Musa in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD00040621
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Washington license search

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98% fewer Medicare Part D claims than the average nephrology physician in 2024

25 Medicare Part D claims for 17 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.

  1. John Musa25
  2. Specialty average1,465

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

John L. Musa among 284 nephrology physician records in Washington

John L. Musa, MD 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 93% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 75% of these records are
  • Record last updated2017 · 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.

The 8 nephrology physician records with the nearest ZIP codes

  1. Jason Deville, D.O.Spokane, WA 992181255440459
  2. Sean Sanchez, MDSpokane, WA 992181225207186
  3. Samer Abdulkhalek, MDSpokane, WA 992041205321262
  4. Mary Ann Arndt, M.D.Spokane, WA 992041750458329
  5. Nelson Chow, MDSpokane, WA 992041427142470
  6. Nelio Guzman Aguayo, M.D.Spokane, WA 992041124266184
  7. Nora Hernandez Garcilazo, MDSpokane, WA 992041538721659
  8. Nathalie Jean, MDSpokane, WA 992041700134293

Common questions

What is John L. Musa, MD's NPI number?

John L. Musa, MD's National Provider Identifier (NPI) is 1154314367, issued on Aug 24, 2005. An NPI identifies a provider in billing; it is not a license.

Where is John L. Musa, MD located?

The NPPES record lists a practice address at 605 E Holland Ave, Spokane, WA, 99218. Phone: (509) 838-2531. Providers update this record themselves, so call before visiting.

How can I verify John L. Musa, MD's license?

NPPES lists Washington license number MD00040621, 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.

How much does John L. Musa, MD prescribe under Medicare Part D?

In 2024, John L. Musa, MD had 25 Medicare Part D claims for 17 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

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.