William Porter, MD
NPI 1366079139 · Pediatrics Physician · Seattle, WA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Porter, MD is a Pediatrics Physician provider in Seattle, WA (NPI 1366079139).
Provider details
- NPI number
- 1366079139
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD61410934 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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
- 2020-03-23
- Last updated
- 2024-05-21
- Certified
- 2024-05-21
Frequently asked questions
- What is William Porter's NPI number?
- William Porter's National Provider Identifier (NPI) is 1366079139, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Porter's specialty?
- William Porter is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is William Porter located?
- William Porter's practice location on file with NPPES is 4800 Sand Point Way Ne # Oc.7830, Seattle, WA 98105-3901.
- What is William Porter's phone number?
- The practice phone number listed in the NPPES registry for William Porter is (206) 987-2525.
- Does William Porter accept Medicare?
- William Porter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Porter's NPI active?
- Yes — William Porter's NPI (1366079139) is active in the NPPES registry as of the last update on 2024-05-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.