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

Ellen Ruby, LCSW, CASAC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1164720306

Ellen Ruby, LCSW, CASAC is a Clinical Social Worker in Sag Harbor, New York. Graduated from State University of New York at Stony Brook, School of Medicine in 1981, 45 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in New York.

Years since qualifying
45
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
NY
In the registry since
2011
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Practice location Address checks out

26 Club Ln
Sag Harbor, NY 11963-2112
Phone: (631) 725-1769
Fax: (631) 725-1769
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence R-028959-1 (NY)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence CASAC2385 (NY)

Record details

NPI number1164720306
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW , CASAC
Sole proprietorYes
NPI enumeratedMarch 12, 2011
Last updated in NPPESMarch 12, 2011
Mailing address26 Club Ln, Sag Harbor, NY 11963-2112

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 1981 (45 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare