Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Barton Mahan, HAS-BC 1808

Hearing Instrument Specialist in The Villages, FL · enumerated 2009.

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

National Provider Identifier

1578899555

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Registry record

Entity type Individual (Type 1)

Name William Barton Mahan

Credential HAS-BC 1808

Sex Male

Practice address 713 Kristine Way, The Villages, FL, 32163

Phone (352) 751-3400

Enumeration date Oct 26, 2009

Last updated in NPPES Apr 8, 2025

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 264554716 (FL) Secondary

237700000X Hearing Instrument Specialist Speech, Language and Hearing Service Providers · License AS1808 (FL) Primary

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 William Mahan practice?

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

What is the NPI number for William Mahan?

The National Provider Identifier (NPI) for William Mahan is 1578899555, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-08.