Clayton John Sontheimer, M.D.
Pediatric Rheumatology Physician · Seattle, WA
Clayton John Sontheimer, M.D. is a pediatric rheumatology physician with a practice address in Seattle, Washington, and NPI 1679736649, issued on Jul 9, 2008. Check the license (Washington 60207732, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Clayton John Sontheimer
- Credential
- M.D.
- Primary taxonomy
- Pediatric Rheumatology Physician 2080P0216X
- License number
- 60207732 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4800 Sand Point Way NE, Seattle, WA 98105
- Phone
- (314) 974-6773
- Enumerated
- Jul 9, 2008
- Record last updated
- May 23, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190212003067); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2008
- Entity
- Type 1 · individual
8 nearest pediatric rheumatology physician records → All 27 in Washington → Look up another NPI →
Also registered at 4800 Sand Point Way NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charlotte AagaardBehavior Technician1194350884
- Sergey Abeshaus, MDNeurological Surgery Physician1770870859
- Ilyse Abrams, NPPediatric Nurse Practitioner1730108333
- Evan Abrass, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1598237919
- Seja AbudiabPediatrics Physician1285166173
- Michele Acker, ARNPPediatric Nurse Practitioner1720019094
Verify Clayton John Sontheimer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license 60207732Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 83.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- St Lukes Clinic-Treasure Valley LLCBoise, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clayton John Sontheimer among 27 pediatric rheumatology physician records in Washington
Clayton John Sontheimer, M.D. is one of 27 pediatric rheumatology physician records with a practice address in Washington. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 48% of them.
- NPI issued2008 · 48% of these records are older, 41% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileYes · 30% of these records are
- Record last updated2018 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0216X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Rheumatology Physician providers in Washington
There are 27 pediatric rheumatology physician records in Washington.
All 27 in Washington → Every provider in Seattle → Pediatric Rheumatology Physician nationwide →
The 8 pediatric rheumatology physician records with the nearest ZIP codes
- Eric Allenspach, M.D., PH.D.Seattle, WA 981051942524400
- Helen EmerySeattle, WA 981051457437139
- Sriharsha Grevich, M.D.Seattle, WA 981051104111939
- Kristen Hayward, MD, MSSeattle, WA 981051881793842
- Kabita Nanda, M.D.Seattle, WA 981051780818518
- Nanci Rascoff, MD, MPHSeattle, WA 981051689838658
- Sarah Ringold, MDSeattle, WA 981051992812713
- Margaret Schlesinger, MDSeattle, WA 981051407803992
Common questions
What is Clayton John Sontheimer, M.D.'s NPI number?
Clayton John Sontheimer, M.D.'s National Provider Identifier (NPI) is 1679736649, issued on Jul 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Clayton John Sontheimer, M.D. located?
The NPPES record lists a practice address at 4800 Sand Point Way NE, Seattle, WA, 98105. Phone: (314) 974-6773. Providers update this record themselves, so call before visiting.
How can I verify Clayton John Sontheimer, M.D.'s license?
NPPES lists Washington license number 60207732, 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.
What is Clayton John Sontheimer, M.D.'s MIPS final score?
The 2023 MIPS final score is 83.3 of 100, reported for the practice group. 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.