Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Wayne Gilliam, DDS

General Practice Dentistry in Lancaster, SC · enumerated 2006 · practices at Gilliam Family Dentistry.

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

National Provider Identifier

1205933223

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Registry record

Entity type Individual (Type 1)

Name Dr. William Wayne Gilliam

Credential DDS

Sex Male

Practice address 208 E Dunlap St, Lancaster, SC, 29720

Phone (803) 286-5858

Fax (803) 313-9650

Enumeration date Sep 20, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 2718 (SC) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
929811	Medicaid	SC	-

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 1205933223 active?

Yes, as of the latest NPPES snapshot, NPI 1205933223 is active (record last updated 2007-07-09).

How do I verify William Gilliam's NPI record?

Cross-check NPI 1205933223 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Gilliam Family Dentistry General Practice Dentistry · Lancaster, SC NPI 1952588824

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.