NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Caroline Therese O'Brien, P.T.

Physical Therapist in Ludington, MI · enumerated 2007 · practices at West Michigan Physical Therapy Pllc.

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

National Provider Identifier

1700072246

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Registry record

Entity type Individual (Type 1)
Name Caroline Therese O'Brien
Credential P.T.
Sex Female
Practice address Ludington, MI, 49431
Fax (231) 843-2209
Enumeration date Sep 19, 2007
Last updated in NPPES Aug 27, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5501003980 (MI) Primary
PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

Other identifiers

Identifier Type State Issuer
0E31033 Other MI BLUE CROSS BLUE SHIELD

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

What is the NPI number for Caroline O'Brien?
The National Provider Identifier (NPI) for Caroline O'Brien is 1700072246, a Type 1 (individual) record in the CMS NPPES registry.
Where does Caroline O'Brien practice?
The practice location on file with NPPES is in Ludington, MI. 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 2019-08-27.