NPPES file of Aug 9, 2026

William John Ellis

Urology Physician · Seattle, WA

William John Ellis is a urology physician with a practice address in Seattle, Washington, and NPI 1992895858, issued on Oct 13, 2006. Check the license (Washington MD00028643, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1992895858
Name
William John Ellis
Primary taxonomy
Urology Physician 208800000X
License number
MD00028643 WA
Self-reported in NPPES; status is on the state search
Practice location
University OF Washington Medical Ctr, Seattle, WA 98195
Phone
(206) 598-4294
Enumerated
Oct 13, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
8129447 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 University OF Washington Medical Ctr

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

  1. Jan AgostiInfectious Disease Physician1912082744
  2. Suhail AhmadNephrology Physician1821173659
  3. Moira AitkenPulmonary Disease Physician1558446385
  4. Charles AlpersAnatomic Pathology & Clinical Pathology Physician1922188820
  5. William Altemeier, MDPulmonary Disease Physician1447335278
  6. Frederick AppelbaumMedical Oncology Physician1356426183

Verify William John Ellis in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWashington Medical Commission
    Search for license MD00028643
    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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79% fewer Medicare Part D claims than the average urology physician in 2024

287 Medicare Part D claims for 97 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. William Ellis287
  2. Specialty average1,340

Most prescribed

  1. Tamsulosin Hcl124 claims
  2. Finasteride87 claims
  3. Ciprofloxacin Hcl39 claims

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.

The MIPS final score for 2023 (Medicare payment program): 93.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score74.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Urology Physician providers in Washington

There are 335 urology physician records in Washington.

Other urology physician records in Washington

  1. Alejandro Abello Martinez, MD MPHSeattle, WA1326662099
  2. Justin Achua, MDSeattle, WA1386222552
  3. Nehizena Aihie, MDSeattle, WA1215499793
  4. Olutiwa Akinsola, MDSeattle, WA1811516743
  5. Mihai Alexianu, M.D.Spokane, WA1497863096
  6. Mark Anderson, M.D.Port Orchard, WA1215900303
  7. Amy Arisco, MDMount Vernon, WA1821183856
  8. Christopher Arroyo, M.D.Gig Harbor, WA1770567893
  9. Rex Averill, MDPort Angeles, WA1124054697
  10. Daniel Avery, MD MPHSeattle, WA1215192463

Common questions

What is William John Ellis's NPI number?

William John Ellis's National Provider Identifier (NPI) is 1992895858, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William John Ellis located?

The NPPES record lists a practice address at University OF Washington Medical Ctr, Seattle, WA, 98195. Phone: (206) 598-4294. Providers update this record themselves, so call before visiting.

How can I verify William John Ellis's license?

NPPES lists Washington license number MD00028643, 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 William John Ellis prescribe under Medicare Part D?

In 2024, William John Ellis had 287 Medicare Part D claims for 97 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.

What is William John Ellis's MIPS final score?

The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.