Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Ellen O'Brien, PT

Physical Therapist in Plymouth, MN · enumerated 2006.

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

National Provider Identifier

1669589354

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Registry record

Entity type Individual (Type 1)

Name Margaret Ellen O'Brien

Credential PT

Sex Female

Practice address 2805 Campus Dr, #115, Plymouth, MN, 55441

Phone (763) 551-9511

Enumeration date Aug 25, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 2492 (MN) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

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 Margaret O'Brien?

The National Provider Identifier (NPI) for Margaret O'Brien is 1669589354, a Type 1 (individual) record in the CMS NPPES registry.

Where does Margaret O'Brien practice?

The practice location on file with NPPES is in Plymouth, MN. 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 2007-07-08.