Mathilde H. Pioro, MD
Rheumatology Physician · Seattle, WA
Mathilde H. Pioro, MD is a rheumatology physician with a practice address in Seattle, Washington, and NPI 1033256417, issued on Feb 1, 2007. Check the license (Washington MD61133102, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Mathilde H. Pioro
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- MD61133102 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1959 NE Pacific St, Seattle, WA 98195
- Phone
- (206) 520-5000
- Enumerated
- Feb 1, 2007
- Record last updated
- Apr 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 1033256417 WA
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 200 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.
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Verify Mathilde H. Pioro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD61133102Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average rheumatology physician in 2024
279 Medicare Part D claims for 63 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Prednisone46 claims
- Allopurinol30 claims
- Humira(Cf) Pen25 claims
- Methotrexate25 claims
- Leflunomide15 claims
- Alendronate Sodium14 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.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Mathilde H. Pioro among 200 rheumatology physician records in Washington
Mathilde H. Pioro, MD is one of 200 rheumatology physician records with a practice address in Washington. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 40% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Washington
There are 200 rheumatology physician records in Washington.
All 200 in Washington → Every provider in Seattle → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Muhsen AlaniSeattle, WA 981951144633504
- Brent Appleton, MDSeattle, WA 981951831292242
- Jeffrey Carlin, MDSeattle, WA 981951932218948
- Myriam Guevara, MDSeattle, WA 981951467604348
- Tetsuya Hoshi, MDSeattle, WA 981951639289903
- David MartinSeattle, WA 981951902996853
- Neelufar MozaffarianSeattle, WA 981951386729192
- Judith NelsonSeattle, WA 981951467537274
Common questions
What is Mathilde H. Pioro, MD's NPI number?
Mathilde H. Pioro, MD's National Provider Identifier (NPI) is 1033256417, issued on Feb 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mathilde H. Pioro, MD located?
The NPPES record lists a practice address at 1959 NE Pacific St, Seattle, WA, 98195. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.
How can I verify Mathilde H. Pioro, MD's license?
NPPES lists Washington license number MD61133102, 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 Mathilde H. Pioro, MD prescribe under Medicare Part D?
In 2024, Mathilde H. Pioro, MD had 279 Medicare Part D claims for 63 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Mathilde H. Pioro, 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.