Alexander Leffler
Social Worker · Brooklyn, NY
Alexander Leffler is a social worker with a practice address in Brooklyn, New York, and NPI 1255692430, issued on Jun 4, 2012. Check the license (New York 086093-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexander Leffler
- Primary taxonomy
- Social Worker 104100000X
- License number
- 086093-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1273 53RD St, Brooklyn, NY 11219
- Phone
- (212) 632-4400
- Enumerated
- Jun 4, 2012
- Record last updated
- Jun 4, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160926001543); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest social worker records → All 23,561 in New York → Look up another NPI →
Also registered at 1273 53RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gershon Basch, LSW, LMSWSocial Worker1942789011
- Rina Ben-Benyamin, LMSWSocial Worker1457813644
- Nehemiah Ben-Zev, LCSWClinical Social Worker1255412367
- Leah Berlin-Davidowitz, LMSWClinical Social Worker1740506914
- Abigail BirnbaumSocial Worker1699023598
- Sarah Brecher, LMSW, CASAC-TSocial Worker1336480896
Verify Alexander Leffler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 086093-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Lakewood Resource And Referral Center IncLakewood, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Leffler among 23,561 social worker records in New York
Alexander Leffler is one of 23,561 social worker records with a practice address in New York. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 18% of them.
- NPI issued2012 · 18% of these records are older, 79% newer
- In a Medicare fileYes · 3% of these records are
- In the CMS Doctors and Clinicians fileYes · 5% of these records are
- Graduated2011 · median 2013 among the 1,177 with a school on file
- Record last updated2012 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3,662 social worker records list a practice address in Brooklyn
They are 3,662 of the 64,057 NPPES records with a practice address in Brooklyn, and 23,561 social worker records in New York.
All 23,561 in New York → Every provider in Brooklyn → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Lillian Elmirs, LMSWBrooklyn, NY 112191487864278
- Stefanie FriedmanBrooklyn, NY 112191184950131
- Hym Katz, LCSWBrooklyn, NY 112191346250198
- Camy Mizrahi Chirazi, L.M.S.WBrooklyn, NY 112191922188796
- Leah Orsini, MSWBrooklyn, NY 112191881880888
- Shulamit Reichman, LMSWBrooklyn, NY 112191144524737
- Domenick Schiavone, LMSWBrooklyn, NY 112191023276631
- Fayge Silverman, L.M.S.W.Brooklyn, NY 112191235466392
Common questions
What is Alexander Leffler's NPI number?
Alexander Leffler's National Provider Identifier (NPI) is 1255692430, issued on Jun 4, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Leffler located?
The NPPES record lists a practice address at 1273 53RD St, Brooklyn, NY, 11219. Phone: (212) 632-4400. Providers update this record themselves, so call before visiting.
How can I verify Alexander Leffler's license?
NPPES lists New York license number 086093-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.