Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Hamilton

Social Worker in Riverton, WY · enumerated 2026.

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

National Provider Identifier

1669377693

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Registry record

Entity type Individual (Type 1)

Name Margaret Hamilton

Sex Female

Practice address 124 E Park Ave, Riverton, WY, 82501

Phone (307) 349-2796

Enumeration date Oct 9, 2026

Last updated in NPPES Oct 9, 2026

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

Where does Margaret Hamilton practice?

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

What is the NPI number for Margaret Hamilton?

The National Provider Identifier (NPI) for Margaret Hamilton is 1669377693, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-10-09.