IndividualActive
William Woo, MD
NPI 1851453799 · Internal Medicine Physician · Seattle, WA
William Woo, MD is a Internal Medicine Physician provider in Seattle, WA (NPI 1851453799).
Provider details
- NPI number
- 1851453799
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD00021800 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
2208 Nw Market St
Ste 410
Seattle, WA 98107-4030
Phone: (206) 320-3335
Fax: (206) 320-8027
Street-level locationGet directions
Mailing address
Po Box 84026
Seattle, WA 98124-8426
Registry dates
- Enumerated
- 2006-12-15
- Last updated
- 2007-08-29
Frequently asked questions
- What is William Woo's NPI number?
- William Woo's National Provider Identifier (NPI) is 1851453799, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Woo's specialty?
- William Woo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Woo located?
- William Woo's practice location on file with NPPES is 2208 Nw Market St, Seattle, WA 98107-4030.
- What is William Woo's phone number?
- The practice phone number listed in the NPPES registry for William Woo is (206) 320-3335.
- Is William Woo's NPI active?
- Yes — William Woo's NPI (1851453799) is active in the NPPES registry as of the last update on 2007-08-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.