IndividualActive
William Knapp
NPI 1740741594 · Counselor · Seattle, WA
William Knapp is a Counselor provider in Seattle, WA (NPI 1740741594).
Provider details
- NPI number
- 1740741594
- Entity type
- Individual
- Primary specialty
- CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(60/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% 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
2133 3rd Ave
Seattle, WA 98121-2385
Phone: (206) 223-3644
Street-level locationGet directions
Mailing address
1700 Airport Way S
Seattle, WA 98134-1618
Registry dates
- Enumerated
- 2019-03-26
- Last updated
- 2019-06-26
Frequently asked questions
- What is William Knapp's NPI number?
- William Knapp's National Provider Identifier (NPI) is 1740741594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Knapp's specialty?
- William Knapp is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).
- Where is William Knapp located?
- William Knapp's practice location on file with NPPES is 2133 3rd Ave, Seattle, WA 98121-2385.
- What is William Knapp's phone number?
- The practice phone number listed in the NPPES registry for William Knapp is (206) 223-3644.
- Is William Knapp's NPI active?
- Yes — William Knapp's NPI (1740741594) is active in the NPPES registry as of the last update on 2019-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.