Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brett Williamson, LSW

Social Worker in Bethlehem, PA · enumerated 2006.

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

National Provider Identifier

1336161926

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Registry record

Entity type Individual (Type 1)

Name Brett Williamson

Credential LSW

Sex Male

Practice address 2604 Schoenersville Rd, Bethlehem, PA, 18017

Phone (610) 691-8028

Enumeration date Jul 24, 2006

Last updated in NPPES Oct 18, 2010

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License SW006458L (PA) 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 specialty is Brett Williamson?

Brett Williamson is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-18.