William Johnston, M.D.
NPI 1245398551 · Emergency Medicine Physician · Seattle, WA
William Johnston, M.D. is a Emergency Medicine Physician provider in Seattle, WA (NPI 1245398551).
Provider details
- NPI number
- 1245398551
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD00015606 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Johnston's NPI number?
- William Johnston's National Provider Identifier (NPI) is 1245398551, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Johnston's specialty?
- William Johnston is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Johnston located?
- William Johnston's practice location on file with NPPES is 1550 N 115th St, Seattle, WA 98133-8401.
- What is William Johnston's phone number?
- The practice phone number listed in the NPPES registry for William Johnston is (206) 368-1765.
- Is William Johnston's NPI active?
- Yes — William Johnston's NPI (1245398551) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.