IndividualActive
Marlencia Williams, LICSW
NPI 1215687934 · Clinical Social Worker · Tukwila, WA
Provider details
- NPI number
- 1215687934
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Female
- Sole proprietor
- No
- License
- SC61213994 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
Established profile(65/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
15455 65th Ave S
Tukwila, WA 98188-2534
Phone: (206) 721-5170
Fax: (360) 353-9440
Street-level locationGet directions
Mailing address
Po Box 2429
Longview, WA 98632-8486
Additional practice locations (1)
- 419 S 2nd St Ste 2Renton, WA 98057-2234Phone: (206) 305-5581
Registry dates
- Enumerated
- 2022-03-25
- Last updated
- 2025-06-18
- Certified
- 2025-06-18
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.