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Katherine Williams, MD
NPI 1518100445 · Pediatrics Physician · Sammamish, WA
Katherine Williams, MD is a Pediatrics Physician provider in Sammamish, WA (NPI 1518100445).
Provider details
- NPI number
- 1518100445
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD 60274584 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(85/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
22620 Se 4th Street
Suite #200
Sammamish, WA 98074
Phone: (425) 836-5407
Fax: (425) 836-5557
Street-level locationGet directions
Mailing address
22620 Se 4th Street
Sammamish, WA 98074
Registry dates
- Enumerated
- 2009-04-08
- Last updated
- 2022-11-21
- Certified
- 2022-11-21
Frequently asked questions
- What is Katherine Williams's NPI number?
- Katherine Williams's National Provider Identifier (NPI) is 1518100445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Williams's specialty?
- Katherine Williams is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Williams located?
- Katherine Williams's practice location on file with NPPES is 22620 Se 4th Street, Sammamish, WA 98074.
- What is Katherine Williams's phone number?
- The practice phone number listed in the NPPES registry for Katherine Williams is (425) 836-5407.
- Is Katherine Williams's NPI active?
- Yes — Katherine Williams's NPI (1518100445) is active in the NPPES registry as of the last update on 2022-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.