Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cathleen Raia Williamson

Behavior Analyst in Bethlehem, PA · enumerated 2012.

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

National Provider Identifier

1487910840

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Registry record

Entity type Individual (Type 1)

Name Cathleen Raia Williamson

Sex Female

Practice address 224 Nazareth Pike, Suite 22a, Bethlehem, PA, 18020

Phone (610) 365-8373

Enumeration date Apr 10, 2012

Last updated in NPPES Apr 9, 2015

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-14-9803 (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 is the NPI number for Cathleen Williamson?

The National Provider Identifier (NPI) for Cathleen Williamson is 1487910840, a Type 1 (individual) record in the CMS NPPES registry.

Where does Cathleen Williamson practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-09.