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

Deborah Ellen Knapp, LCSW

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1831484468

Deborah Ellen Knapp, LCSW is a Clinical Social Worker in Smithtown, New York. Qualified in 2000, 26 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in New York.

Years since qualifying
26
Licensed in
NY
In the registry since
2011
Specialties on file
4
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

267 E Main St Bldg B Ste 21-B
Smithtown, NY 11787
Phone: (631) 655-4495
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 075442 (NY)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 075442 (NY)
Mental Health Counselor Taxonomy 101YM0800X · Licence 075442 (NY)
Professional Counselor Taxonomy 101YP2500X · Licence 075442 (NY)

Record details

NPI number1831484468
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJune 11, 2011
Last updated in NPPESOctober 16, 2017

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Smithtown