Ruth Williamson
NPI 1275138463 · Physical Therapy Assistant · Seattle, WA
Ruth Williamson is a Physical Therapy Assistant provider in Seattle, WA (NPI 1275138463).
Provider details
- NPI number
- 1275138463
- Entity type
- Individual
- Primary specialty
- Physical Therapy AssistantRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- P160031155 (WA)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-12-03
- Last updated
- 2020-12-03
- Certified
- 2020-12-03
Frequently asked questions
- What is Ruth Williamson's NPI number?
- Ruth Williamson's National Provider Identifier (NPI) is 1275138463, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Williamson's specialty?
- Ruth Williamson is listed in the NPPES registry with a primary specialty of Physical Therapy Assistant (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Ruth Williamson located?
- Ruth Williamson's practice location on file with NPPES is 200 15th Ave E, Seattle, WA 98112-5260.
- What is Ruth Williamson's phone number?
- The practice phone number listed in the NPPES registry for Ruth Williamson is (206) 326-4530.
- Is Ruth Williamson's NPI active?
- Yes — Ruth Williamson's NPI (1275138463) is active in the NPPES registry as of the last update on 2020-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.