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

Mr. Mitchell F Olster, LCSW

Individual provider Clinical Social Worker · NPI 1265519284

Mr. Mitchell F Olster, LCSW is a Clinical Social Worker in Massapequa, New York. Qualified in 1982, 44 years ago. Accepts Medicare assignment. Licensed in New York.

Years since qualifying
44
Licensed in
NY
In the registry since
2006
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

5500 Merrick Rd
Massapequa, NY 11758-6208
Phone: (516) 541-9849
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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 R287581 (NY)

Record details

NPI number1265519284
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedNovember 1, 2006
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 1982 (44 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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