Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leslie Elfenbein, D.M.D.

Endodontics in Clifton, NJ · enumerated 2005.

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

National Provider Identifier

1114910809

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Registry record

Entity type Individual (Type 1)

Name Dr. Leslie Elfenbein

Credential D.M.D.

Sex Male

Practice address 1001 Clifton Ave, Suite 1a, Clifton, NJ, 07013

Phone (973) 773-6050

Fax (973) 773-3520

Enumeration date Aug 26, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223E0200X Endodontics Dental Providers · License 13429 (NJ) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Leslie Elfenbein?

Leslie Elfenbein is registered in NPPES with the primary taxonomy of Endodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.