Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Laurence Leff Dmd LLC

Dentist in Montclair, NJ · enumerated 2006 · authorized official Laurence Leff, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1619987161

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Registry record

Entity type Organization (Type 2)

Legal business name Laurence Leff Dmd LLC

Practice address 460 Bloomfield Ave, Suite 311, Montclair, NJ, 07042

Phone (973) 783-3535

Fax (973) 783-4707

Enumeration date Aug 8, 2006

Last updated in NPPES Apr 26, 2012

Taxonomy & classification

122300000X Dentist Dental Providers · License DI15317 (NJ) Primary

Authorized official

Name Laurence Leff

Title Owner

Phone (973) 753-3535

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2012-04-26. Verify at npiregistry.cms.hhs.gov.

Where is Laurence Leff Dmd LLC located?

The practice location on file with NPPES is in Montclair, NJ.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-26.