Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Roger Charles Williams, MSW

Social Worker in Columbia, SC · enumerated 2007.

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

National Provider Identifier

1255483244

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Registry record

Entity type Individual (Type 1)

Name Roger Charles Williams

Credential MSW

Sex Male

Practice address 2414 Bull St, Columbia, SC, 29201

Phone (803) 898-8301

Fax (803) 898-8347

Enumeration date Jan 18, 2007

Last updated in NPPES Jun 24, 2020

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 4487 (SC) Primary

171R00000X Interpreter Other Service Providers Secondary

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.

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Frequently asked questions

How do I verify Roger Williams's NPI record?

Cross-check NPI 1255483244 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1255483244 active?

Yes, as of the latest NPPES snapshot, NPI 1255483244 is active (record last updated 2020-06-24).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-24.