Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Catherine Irwin, PT

Physical Therapist in Glenview, IL · enumerated 2006.

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

National Provider Identifier

1972541720

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Registry record

Entity type Individual (Type 1)

Name Catherine Irwin

Credential PT

Sex Female

Practice address 2401 Ravine Way, Suite 100, Glenview, IL, 60025

Phone (847) 724-4791

Enumeration date Jun 3, 2006

Last updated in NPPES Aug 28, 2007

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers 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 Catherine Irwin?

The National Provider Identifier (NPI) for Catherine Irwin is 1972541720, a Type 1 (individual) record in the CMS NPPES registry.

Where does Catherine Irwin practice?

The practice location on file with NPPES is in Glenview, IL. 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 2007-08-28.