Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Steven Randall Leibowitz, M.D.

Gastroenterology Physician in River Edge, NJ · enumerated 2006.

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

National Provider Identifier

1053323600

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Registry record

Entity type Individual (Type 1)

Name Dr. Steven Randall Leibowitz

Credential M.D.

Sex Male

Practice address 130 Kinderkamack Rd, Suite 301, River Edge, NJ, 07661

Phone (201) 489-7772

Fax (201) 489-2544

Enumeration date Aug 12, 2006

Last updated in NPPES Aug 9, 2023

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 25MA05013700 (NJ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
5403308	Medicaid	NJ	-

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

What is the NPI number for Steven Leibowitz?

The National Provider Identifier (NPI) for Steven Leibowitz is 1053323600, a Type 1 (individual) record in the CMS NPPES registry.

Where does Steven Leibowitz practice?

The practice location on file with NPPES is in River Edge, NJ. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-09.