Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Martin Leibowitz, O.D.

Optometrist in Holbrook, NY · enumerated 2007.

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

National Provider Identifier

1245358753

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Martin Leibowitz

Credential O.D.

Sex Male

Practice address 5801 Sunrise Highway, Suite 41, Holbrook, NY, 11741

Phone (631) 567-4411

Enumeration date Mar 26, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 003374-1 (NY) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Martin Leibowitz practice?

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

What is the NPI number for Martin Leibowitz?

The National Provider Identifier (NPI) for Martin Leibowitz is 1245358753, a Type 1 (individual) record in the CMS NPPES registry.

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