Ruth Williamson
Physical Therapy Assistant · Seattle, WA
Ruth Williamson is a physical therapy assistant with a practice address in Seattle, Washington, and NPI 1275138463, issued on Dec 3, 2020. Check the license (Washington P160031155, as entered in NPPES) with the Washington board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ruth Williamson
- Primary taxonomy
- Physical Therapy Assistant 225200000X
- License number
- P160031155 WA
Self-reported in NPPES; status is on the state search - Practice location
- 200 15TH Ave E, Seattle, WA 98112
- Phone
- (206) 326-4530
- Enumerated
- Dec 3, 2020
- Record last updated
- Dec 3, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physical therapy assistant records → All 1,390 in Washington → Look up another NPI →
Also registered at 200 15TH Ave E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Timothy Baltz, M.D.Allergy & Immunology Physician1154471068
- Yvonne BatesPharmacist1376689471
- Emily Battisti, AUDAudiologist1285086710
- Carolyn Berg, LWSocial Worker1013042076
- Stephen Bezruchka, M.D.Emergency Medicine Physician1992825640
- Daniel Bolstad, CRNACertified Registered Nurse Anesthetist1356470199
Verify Ruth Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license P160031155Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ruth Williamson among 1,390 physical therapy assistant records in Washington
Ruth Williamson is one of 1,390 physical therapy assistant records with a practice address in Washington. under 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2020, is newer than 68% of them.
- NPI issued2020 · 68% of these records are older, 28% newer
- In a Medicare fileNo · under 1% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2020 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225200000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physical Therapy Assistant providers in Washington
There are 1,390 physical therapy assistant records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,390 in Washington → Every provider in Seattle → Physical Therapy Assistant nationwide →
The 8 physical therapy assistant records with the nearest ZIP codes
- Patrick Nixon, PTASeattle, WA 981121417316837
- Rianna PangelinanSeattle, WA 981121568162188
- Antonio PauleSeattle, WA 981121639927809
- Greg AwaltBainbridge Island, WA 981101225467665
- Claire Beukes, PTABainbridge Island, WA 981101306258512
- Samantha Ryan, PTABainbridge Island, WA 981101821654054
- Amy Schmitz, PTABainbridge Island, WA 981101356873178
- Colleen Scott, PTABainbridge Island, WA 981101831470913
Common questions
What is Ruth Williamson's NPI number?
Ruth Williamson's National Provider Identifier (NPI) is 1275138463, issued on Dec 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ruth Williamson located?
The NPPES record lists a practice address at 200 15TH Ave E, Seattle, WA, 98112. Phone: (206) 326-4530. Providers update this record themselves, so call before visiting.
How can I verify Ruth Williamson's license?
NPPES lists Washington license number P160031155, 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. 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.