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

Mr. Lawrence Greenstein, LCSW

Individual provider Clinical Social Worker · NPI 1447688635

Mr. Lawrence Greenstein, LCSW is a Clinical Social Worker in Trenton, New Jersey. Graduated from Rutgers New Jersey Medical School in 2011, 15 years ago. Practices with Arc Mercer Inc, a 7-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New Jersey.

Years since qualifying
15
Trained at
Rutgers New Jersey Medical School
Licensed in
NJ
In the registry since
2013
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

635 S Clinton Ave
Trenton, NJ 08611-1831
Phone: (609) 508-0638
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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 44SC05586900 (NJ)

Record details

NPI number1447688635
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedOctober 24, 2013
Last updated in NPPESJanuary 29, 2026
Certification dateJanuary 29, 2026

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolRUTGERS NEW JERSEY MEDICAL SCHOOL
Graduated 2011 (15 years in practice)
Group practice Arc Mercer Inc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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