Ellen Deweerdt, LCSW
NPI 1508078106 · Social Worker · West Islip, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Deweerdt, LCSW is a Social Worker provider in West Islip, NY (NPI 1508078106).
Provider details
- NPI number
- 1508078106
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 0364981 (NY)
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
19 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
- 2007-05-04
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ellen Deweerdt's NPI number?
- Ellen Deweerdt's National Provider Identifier (NPI) is 1508078106, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Deweerdt's specialty?
- Ellen Deweerdt is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Ellen Deweerdt located?
- Ellen Deweerdt's practice location on file with NPPES is 400 Montauk Highway, West Islip, NY 11795.
- What is Ellen Deweerdt's phone number?
- The practice phone number listed in the NPPES registry for Ellen Deweerdt is (631) 321-1221.
- Does Ellen Deweerdt accept Medicare?
- Ellen Deweerdt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Deweerdt's NPI active?
- Yes — Ellen Deweerdt's NPI (1508078106) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.