Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Colleen H Williams

Social Worker in Greeley, CO · enumerated 2007.

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

National Provider Identifier

1962691162

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Registry record

Entity type Individual (Type 1)

Name Ms. Colleen H Williams

Sex Female

Practice address 1306 11th Ave, Greeley, CO, 80631

Phone (970) 347-2120

Fax (970) 353-9782

Enumeration date Oct 24, 2007

Last updated in NPPES Oct 24, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers 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 Colleen Williams?

The National Provider Identifier (NPI) for Colleen Williams is 1962691162, a Type 1 (individual) record in the CMS NPPES registry.

Where does Colleen Williams practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-24.