Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Leslie Milton O'Steen, M.D.

Anesthesiology Physician in Ft Walton Bch, FL · enumerated 2006.

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

National Provider Identifier

1548270903

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Registry record

Entity type Individual (Type 1)

Name Dr. Leslie Milton O'Steen

Credential M.D.

Sex Male

Practice address Ft Walton Bch, FL, 32547

Phone (850) 862-1200

Enumeration date Aug 8, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License ME 20878 (FL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Leslie O'Steen practice?

The practice location on file with NPPES is in Ft Walton Bch, FL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Leslie O'Steen?

The National Provider Identifier (NPI) for Leslie O'Steen is 1548270903, 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.