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

William Maddox

Clinical Medical Laboratory in Christiansburg, VA · enumerated 2024.

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

National Provider Identifier

1477397180

Verified

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Registry record

Entity type Individual (Type 1)

Name William Maddox

Sex Male

Practice address Christiansburg, VA, 24073

Phone (540) 382-1230

Enumeration date Jun 19, 2024

Last updated in NPPES Jun 19, 2024

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

Taxonomy & licenses

291U00000X Clinical Medical Laboratory Laboratories · License 49D2075691 (VA) 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

What is the NPI number for William Maddox?

The National Provider Identifier (NPI) for William Maddox is 1477397180, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Maddox practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-19.