IndividualActive
Joan Williams, LICSW
NPI 1558236687 · Clinical Social Worker · Washington, DC
Joan Williams, LICSW is a Clinical Social Worker provider in Washington, DC (NPI 1558236687).
Provider details
- NPI number
- 1558236687
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- LC50081202 (DC)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(54/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
3816 26th St Ne
Washington, DC 20018-3127
Phone: (860) 280-4282
Street-level locationGet directions
Mailing address
3816 26th St Ne
Washington, DC 20018-3127
Registry dates
- Enumerated
- 2025-10-08
- Last updated
- 2025-10-08
- Certified
- 2025-10-08
Frequently asked questions
- What is Joan Williams's NPI number?
- Joan Williams's National Provider Identifier (NPI) is 1558236687, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joan Williams's specialty?
- Joan Williams is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Joan Williams located?
- Joan Williams's practice location on file with NPPES is 3816 26th St Ne, Washington, DC 20018-3127.
- What is Joan Williams's phone number?
- The practice phone number listed in the NPPES registry for Joan Williams is (860) 280-4282.
- Is Joan Williams's NPI active?
- Yes — Joan Williams's NPI (1558236687) is active in the NPPES registry as of the last update on 2025-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.