Mark Stephen King Mayo, MD
Hospitalist Physician · Seattle, WA
Mark Stephen King Mayo, MD is a hospitalist physician with a practice address in Seattle, Washington, and NPI 1598152639, issued on Apr 15, 2015. Check the license (Washington MD60943946, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Mark Stephen King Mayo
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- MD60943946 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1959 NE Pacific St, Seattle, WA 98195
- Phone
- (206) 543-3605
- Enumerated
- Apr 15, 2015
- Record last updated
- May 22, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicaid ID
- 1598152639 WA
- Medicare enrollment
- Enrolled (PECOS I20190613001692); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2015
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 793 in Washington → Look up another NPI →
Also registered at 1959 NE Pacific St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Benjamin AaronsonPsychologist1497108880
- Laith Abandeh, MDPediatric Radiology Physician1609404243
- Rebecca AbayInternal Medicine Physician1528565520
- Gifti Abbo, MDStudent in an Organized Health Care Education/Training Program1316688989
- Nandini AbburiNeurology Physician1730618349
- Mohamed AbdelmotlebDiagnostic Radiology Physician1134892656
Verify Mark Stephen King Mayo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60943946Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hospitalist physician in 2024
15 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Stephen King Mayo among 793 hospitalist physician records in Washington
Mark Stephen King Mayo, MD is one of 793 hospitalist physician records with a practice address in Washington. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 61% of them.
- NPI issued2015 · 61% of these records are older, 36% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated2015 · median 2011 among the 649 with a school on file
- Record last updated2019 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Washington
There are 793 hospitalist physician records in Washington.
All 793 in Washington → Every provider in Seattle → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Lauren Brown, M.D.Seattle, WA 981951205134590
- Brandon Fainstad, M.D.Seattle, WA 981951063711513
- Stephen Farris, M.D.Seattle, WA 981951760638126
- Ronald Huang, MDSeattle, WA 981951730345497
- Molly Jackson, MDSeattle, WA 981951710090725
- Elizabeth Kaplan, M.D.Seattle, WA 981951831391374
- Michael Lenaeus, M.D.Seattle, WA 981951316262538
- Jesse Levin, MDSeattle, WA 981951356579916
Common questions
What is Mark Stephen King Mayo, MD's NPI number?
Mark Stephen King Mayo, MD's National Provider Identifier (NPI) is 1598152639, issued on Apr 15, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mark Stephen King Mayo, MD located?
The NPPES record lists a practice address at 1959 NE Pacific St, Seattle, WA, 98195. Phone: (206) 543-3605. Providers update this record themselves, so call before visiting.
How can I verify Mark Stephen King Mayo, MD's license?
NPPES lists Washington license number MD60943946, 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 Mark Stephen King Mayo, MD prescribe under Medicare Part D?
In 2024, Mark Stephen King Mayo, MD had 15 Medicare Part D claims; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Mark Stephen King Mayo, MD'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.