Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Lang Foster III, DMD

Orthodontics and Dentofacial Orthopedics Dentistry in Anderson, SC · enumerated 2005.

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

National Provider Identifier

1366428799

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Registry record

Entity type Individual (Type 1)

Name Dr. William Lang Foster III

Credential DMD

Sex Male

Practice address 1109 Ella Street, Anderson, SC, 29621

Phone (864) 261-8985

Fax (864) 261-8987

Enumeration date Dec 18, 2005

Last updated in NPPES Dec 11, 2014

Taxonomy & licenses

122300000X Dentist Dental Providers · License 003318 (SC) Secondary

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 003318 (SC) Primary

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 013654 (GA) Secondary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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

Is NPI 1366428799 active?

Yes, as of the latest NPPES snapshot, NPI 1366428799 is active (record last updated 2014-12-11).

How do I verify William Foster's NPI record?

Cross-check NPI 1366428799 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-11.