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

Alexander Leffler

Individual provider Social Worker · NPI 1255692430

Alexander Leffler is a Clinical Social Worker in Brooklyn, New York. Qualified in 2011, 15 years ago. Practices with Lakewood Resource and Referral Center Inc, a 107-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
15
Licensed in
NY
In the registry since
2012

Practice location Address checks out

1273 53rd St
Brooklyn, NY 11219-3865
Phone: (212) 632-4400
Show map & directions

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

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 086093-1 (NY)

Record details

NPI number1255692430
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJune 4, 2012
Last updated in NPPESJune 4, 2012

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Lakewood Resource And Referral Center Inc — 107 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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