NPPES file of Aug 9, 2026

Lawrence A. Propper, MSW LCSW

Clinical Social Worker · Mt Sinai, NY

Lawrence A. Propper, MSW LCSW is a clinical social worker with a practice address in Mt Sinai, New York, and NPI 1336282615, issued on Feb 15, 2007. Check the license with the New York board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1336282615
Name
Lawrence A. Propper
Credential
MSW LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
R021518 NM
Self-reported in NPPES; status is on the state search
Practice location
28 North Country RD, Mt Sinai, NY 11766
Phone
(631) 928-2596
Enumerated
Feb 15, 2007
Record last updated
May 6, 2026
Medicare enrollment
Enrolled (PECOS I20101112000303); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Verify Lawrence A. Propper in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Lawrence A. Propper among 29,293 clinical social worker records in New York

Lawrence A. Propper, MSW LCSW is one of 29,293 clinical social worker records with a practice address in New York. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 17% of them.

  • NPI issued2007 · 17% of these records are older, 68% newer
  • In a Medicare fileNo · 8% of these records are
  • In the CMS Doctors and Clinicians fileYes · 17% of these records are
  • Graduated1978 · median 2001 among the 5,004 with a school on file
  • Record last updated2026 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Social Worker providers in New York

There are 29,293 clinical social worker records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 clinical social worker records with the nearest ZIP codes

  1. Susan Bongiorno, LMSWMount Sinai, NY 117661295164747
  2. Ruth Ellerd, LCSWMount Sinai, NY 117661972573491
  3. Steve Hauptman, L.C.S.W.Mount Sinai, NY 117661851418891
  4. Richard Hjelset, LMSWMount Sinai, NY 117661306394002
  5. Michael Hoffman, MSWMount Sinai, NY 117661154412658
  6. Ronald Kaplan, LCSWMount Sinai, NY 117661982781795
  7. Tiffany Kehoe, LCSWMount Sinai, NY 117661386969517
  8. Nicole Lamariana, MA, LCSWMount Sinai, NY 117661154789816

Common questions

What is Lawrence A. Propper, MSW LCSW's NPI number?

Lawrence A. Propper, MSW LCSW's National Provider Identifier (NPI) is 1336282615, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Lawrence A. Propper, MSW LCSW located?

The NPPES record lists a practice address at 28 North Country RD, Mt Sinai, NY, 11766. Phone: (631) 928-2596. Providers update this record themselves, so call before visiting.

How can I verify Lawrence A. Propper, MSW LCSW's license?

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. 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.