Mailyn Faye Williams, PA-C, RDMS, RVT
Physician Assistant · Seattle, WA
Mailyn Faye Williams, PA-C, RDMS, RVT is a physician assistant with a practice address in Seattle, Washington, and NPI 1457925042, issued on May 18, 2021. Check the license with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mailyn Faye Williams
- Credential
- PA-C, RDMS, RVT
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 4311 11TH Ave NE Ste 200, Seattle, WA 98105
- Phone
- (206) 616-4001
- Enumerated
- May 18, 2021
- Record last updated
- Sep 9, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20211119001186); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,718 in Washington → Look up another NPI →
Also registered at 4311 11TH Ave NE Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sierra BerryStudent in an Organized Health Care Education/Training Program1215899745
Verify Mailyn Faye Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this professionCheck 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): 65.5 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 2 group practices
- Alaska Radiology Associates IncAnchorage, AK
- Imaging Associates LLCPalmer, AK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mailyn Faye Williams among 3,718 physician assistant records in Washington
Mailyn Faye Williams, PA-C, RDMS, RVT is one of 3,718 physician assistant records with a practice address in Washington. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 77% of them.
- NPI issued2021 · 77% of these records are older, 17% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2021 · median 2017 among the 2,460 with a school on file
- Record last updated2021 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
828 physician assistant records list a practice address in Seattle
They are 828 of the 41,956 NPPES records with a practice address in Seattle, and 3,718 physician assistant records in Washington.
All 3,718 in Washington → Every provider in Seattle → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- James Anderson, PA-CSeattle, WA 981051427133768
- Timothy Coglon, P.A.C.Seattle, WA 981051063442440
- Angela D'Appollonio, PA-CSeattle, WA 981051982901617
- Douglas Dedo, PA-C, MCHSSeattle, WA 981051174862890
- Megan Donnelly, PASeattle, WA 981051578815759
- Brendan FinnSeattle, WA 981051194071894
- James Foulsham, PA-CSeattle, WA 981051821004904
- Sara Handschin, PA-CSeattle, WA 981051740472109
Common questions
What is Mailyn Faye Williams, PA-C, RDMS, RVT's NPI number?
Mailyn Faye Williams, PA-C, RDMS, RVT's National Provider Identifier (NPI) is 1457925042, issued on May 18, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mailyn Faye Williams, PA-C, RDMS, RVT located?
The NPPES record lists a practice address at 4311 11TH Ave NE Ste 200, Seattle, WA, 98105. Phone: (206) 616-4001. Providers update this record themselves, so call before visiting.
How can I verify Mailyn Faye Williams, PA-C, RDMS, RVT's license?
Search the Washington board that licenses this profession; the NPPES record confirms identity only.
What is Mailyn Faye Williams, PA-C, RDMS, RVT's MIPS final score?
The 2023 MIPS final score is 65.5 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.