Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Leslie D. Schlessinger MD PA

Q: What is the NPI number for Leslie D. Schlessinger MD PA?

The NPI for Leslie D. Schlessinger MD PA is 1104133057, a Type 2 (organization) record in the CMS NPPES registry.

Internal Medicine Physician in Basking Ridge, NJ · enumerated 2010 · authorized official Leslie Schlessinger, President.

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

National Provider Identifier

1104133057

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Registry record

Entity type Organization (Type 2)

Legal business name Leslie D. Schlessinger MD PA

Practice address 195 Morristown Rd, Basking Ridge, NJ, 07920

Phone (908) 766-3640

Fax (908) 766-4229

Enumeration date Sep 13, 2010

Last updated in NPPES Sep 21, 2010

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25MA02928400 (NJ) Primary

Authorized official

Name Leslie Schlessinger

Title President

Phone (908) 766-3640

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Who is the authorized official for Leslie D. Schlessinger MD PA?

NPPES lists Leslie Schlessinger (President) as the authorized official for this organization.

What is the NPI number for Leslie D. Schlessinger MD PA?

The NPI for Leslie D. Schlessinger MD PA is 1104133057, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-21.