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

Mrs. Cybil Price Williamson, MSW, LISW-CP

Clinical Social Worker in Sumter, SC · enumerated 2009.

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

National Provider Identifier

1871724039

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Registry record

Entity type Individual (Type 1)

Name Mrs. Cybil Price Williamson

Credential MSW, LISW-CP

Sex Female

Practice address Sumter, SC, 29153

Phone (803) 775-2801

Enumeration date Aug 5, 2009

Last updated in NPPES Aug 5, 2009

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 8669 (SC) 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 Cybil Williamson practice?

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

What is the NPI number for Cybil Williamson?

The National Provider Identifier (NPI) for Cybil Williamson is 1871724039, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-05.