Ellen Deweerdt, LCSW
Social Worker · West Islip, NY
Ellen Deweerdt, LCSW is a social worker with a practice address in West Islip, New York, and NPI 1508078106, issued on May 4, 2007. Check the license (New York 0364981, as entered in NPPES) with the New York board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ellen Deweerdt
- Credential
- LCSW
- Primary taxonomy
- Social Worker 104100000X
- License number
- 0364981 NY
Self-reported in NPPES; status is on the state search - Practice location
- 400 Montauk Highway, West Islip, NY 11795
- Phone
- (631) 321-1221
- Enumerated
- May 4, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090304000280); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest social worker records → All 23,561 in New York → Look up another NPI →
Also registered at 400 Montauk Highway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Helen Meyers, PHDClinical Psychologist1700945623
Verify Ellen Deweerdt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 0364981Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ellen Deweerdt among 23,561 social worker records in New York
Ellen Deweerdt, LCSW is one of 23,561 social worker records with a practice address in New York. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 4% of them.
- NPI issued2007 · 4% of these records are older, 92% newer
- In a Medicare fileNo · 3% of these records are
- In the CMS Doctors and Clinicians fileYes · 5% of these records are
- Graduated1986 · median 2013 among the 1,177 with a school on file
- Record last updated2007 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 social worker records list a practice address in West Islip
They are 24 of the 1,107 NPPES records with a practice address in West Islip, and 23,561 social worker records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 23,561 in New York → Every provider in West Islip → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Allison BaltaianWest Islip, NY 117951912388083
- Taylor Blanket, LMSWWest Islip, NY 117951437739232
- Christie Burke, LMSWWest Islip, NY 117951497390975
- Haley CabassaWest Islip, NY 117951851014153
- Sarah CurleyWest Islip, NY 117951861964017
- Michele Gennaro, LCSWWest Islip, NY 117951932678729
- Kaleighan Mills, LMSWWest Islip, NY 117951457995904
- Samantha Perkins, LMSWWest Islip, NY 117951447808423
Common questions
What is Ellen Deweerdt, LCSW's NPI number?
Ellen Deweerdt, LCSW's National Provider Identifier (NPI) is 1508078106, issued on May 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Deweerdt, LCSW located?
The NPPES record lists a practice address at 400 Montauk Highway, West Islip, NY, 11795. Phone: (631) 321-1221. Providers update this record themselves, so call before visiting.
How can I verify Ellen Deweerdt, LCSW's license?
NPPES lists New York license number 0364981, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.