Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alexander John Leong, OD

Optometrist in Columbus, GA · enumerated 2018.

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

National Provider Identifier

1578039210

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Registry record

Entity type Individual (Type 1)

Name Dr. Alexander John Leong

Credential OD

Sex Male

Practice address 2616 Warm Springs Rd, Columbus, GA, 31904

Phone (706) 323-3491

Fax (706) 660-9191

Enumeration date Oct 21, 2018

Last updated in NPPES Jun 30, 2026

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT003443 (GA) 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

What is the NPI number for Alexander Leong?

The National Provider Identifier (NPI) for Alexander Leong is 1578039210, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alexander Leong practice?

The practice location on file with NPPES is in Columbus, GA. 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 2026-06-30.