Matthew Williams, RN
Family Nurse Practitioner · Seattle, WA
Matthew Williams, RN is a family nurse practitioner with a practice address in Seattle, Washington, and NPI 1740900794, issued on Aug 30, 2022. Check the license (Washington AP70012315, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew Williams
- Credential
- RN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- AP70012315 WA
RN60435712 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1930 Post Aly, Seattle, WA 98101
- Phone
- (206) 548-5850
- Enumerated
- Aug 30, 2022
- Record last updated
- Jul 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20250815001856); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,781 in Washington → Look up another NPI →
Also registered at 1930 Post Aly
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ambreen Ahsan, NPFamily Nurse Practitioner1124503313
- Ann Allen, LICSWClinical Social Worker1932345717
- Virginia Arnold, ARNPAdult Health Nurse Practitioner1609350453
- Natasha Breidenbach, LSWAICClinical Social Worker1356743355
- Nguyen Cao, PHARMDPharmacist1265107205
- Morgan Fitzpatrick, ARNP, MPH, RNAdult Health Nurse Practitioner1134479512
Verify Matthew Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP70012315Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Neighborcare HealthSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Williams among 3,781 family nurse practitioner records in Washington
Matthew Williams, RN is one of 3,781 family nurse practitioner records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 78% of them.
- NPI issued2022 · 78% of these records are older, 17% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2025 · median 2018 among the 2,116 with a school on file
- Record last updated2025 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
663 family nurse practitioner records list a practice address in Seattle
They are 663 of the 41,956 NPPES records with a practice address in Seattle, and 3,781 family nurse practitioner records in Washington.
All 3,781 in Washington → Every provider in Seattle → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Karin Baer, ARNPSeattle, WA 981011558478438
- Kaitlin Brasier, D.N.P., A.R.N.P., RNSeattle, WA 981011003136623
- Melanie Brinckerhoff, ARNPSeattle, WA 981011366592339
- Glenda Clemens, ARNPSeattle, WA 981011124036348
- Erin Forsythe, ARNPSeattle, WA 981011386083996
- Joseph Gardner, ARNPSeattle, WA 981011629409461
- Terrance James, FNPSeattle, WA 981011508069956
- Alani Kalfayan, NP-CSeattle, WA 981011487075644
Common questions
What is Matthew Williams, RN's NPI number?
Matthew Williams, RN's National Provider Identifier (NPI) is 1740900794, issued on Aug 30, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Williams, RN located?
The NPPES record lists a practice address at 1930 Post Aly, Seattle, WA, 98101. Phone: (206) 548-5850. Providers update this record themselves, so call before visiting.
How can I verify Matthew Williams, RN's license?
NPPES lists Washington license number AP70012315, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
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.