Anne Williams, LMSW
NPI 1396221420 · Social Worker · Bethesda, MD
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anne Williams, LMSW is a Social Worker provider in Bethesda, MD (NPI 1396221420).
Provider details
- NPI number
- 1396221420
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 24045 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
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
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
Mailing address
Registry dates
- Enumerated
- 2018-07-11
- Last updated
- 2022-09-01
- Certified
- 2022-09-01
Frequently asked questions
- What is Anne Williams's NPI number?
- Anne Williams's National Provider Identifier (NPI) is 1396221420, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anne Williams's specialty?
- Anne Williams is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Anne Williams located?
- Anne Williams's practice location on file with NPPES is 4828 West Ln Ste B, Bethesda, MD 20814-6340.
- What is Anne Williams's phone number?
- The practice phone number listed in the NPPES registry for Anne Williams is (240) 406-4680.
- Does Anne Williams accept Medicare?
- Anne Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anne Williams's NPI active?
- Yes — Anne Williams's NPI (1396221420) is active in the NPPES registry as of the last update on 2022-09-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.