Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary D Hamilton, OTR

Occupational Therapist in Thornton, CO · enumerated 2005.

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

National Provider Identifier

1649269549

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary D Hamilton

Credential OTR

Sex Female

Practice address 9195 Grant St, Suite 100, Thornton, CO, 80229

Phone (303) 451-7700

Fax (303) 252-9474

Enumeration date Oct 14, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 982751 (CO) 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.

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Frequently asked questions

Where does Mary Hamilton practice?

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

What is the NPI number for Mary Hamilton?

The National Provider Identifier (NPI) for Mary Hamilton is 1649269549, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.