Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

MS. Ellen Deweerdt, LCSW

Individual provider Social Worker · NPI 1508078106

MS. Ellen Deweerdt, LCSW is a Clinical Social Worker in West Islip, New York. Qualified in 1986, 40 years ago. Accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
40
Licensed in
NY
In the registry since
2007
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

400 Montauk Hwy Ste 114
West Islip, NY 11795
Phone: (631) 321-1221
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 0364981 (NY)

Record details

NPI number1508078106
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedMay 4, 2007
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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