John Williamson
NPI 1710358080 · Speech-Language Pathologist · Bellevue, WA
John Williamson is a Speech-Language Pathologist provider in Bellevue, WA (NPI 1710358080).
Provider details
- NPI number
- 1710358080
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- SLP.LL.60606128 (WA)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2015-10-13
- Last updated
- 2021-09-14
- Certified
- 2021-09-14
Frequently asked questions
- What is John Williamson's NPI number?
- John Williamson's National Provider Identifier (NPI) is 1710358080, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Williamson's specialty?
- John Williamson is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is John Williamson located?
- John Williamson's practice location on file with NPPES is 123 112th Ave Ne Apt 226, Bellevue, WA 98004-6489.
- What is John Williamson's phone number?
- The practice phone number listed in the NPPES registry for John Williamson is (425) 229-9036.
- Is John Williamson's NPI active?
- Yes — John Williamson's NPI (1710358080) is active in the NPPES registry as of the last update on 2021-09-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.