Margaret Williams
NPI 1912692559 · Social Worker · Boston, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Williams is a Social Worker provider in Boston, MA (NPI 1912692559).
Provider details
- NPI number
- 1912692559
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 226435 (MA)
Specialties & taxonomies
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
3 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
- 2023-04-10
- Last updated
- 2023-04-10
- Certified
- 2023-04-10
Frequently asked questions
- What is Margaret Williams's NPI number?
- Margaret Williams's National Provider Identifier (NPI) is 1912692559, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Williams's specialty?
- Margaret Williams is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Margaret Williams located?
- Margaret Williams's practice location on file with NPPES is 15 Parkman St, Boston, MA 02114-3117.
- What is Margaret Williams's phone number?
- The practice phone number listed in the NPPES registry for Margaret Williams is (617) 724-9115.
- Does Margaret Williams accept Medicare?
- Margaret Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Williams's NPI active?
- Yes — Margaret Williams's NPI (1912692559) is active in the NPPES registry as of the last update on 2023-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.