Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Cathleen Marie Clark, MPT

Pediatric Physical Therapist in Southington, CT · enumerated 2006.

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

National Provider Identifier

1659335859

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Registry record

Entity type Individual (Type 1)

Name Mrs. Cathleen Marie Clark

Credential MPT

Sex Female

Practice address 209 Partridge Dr, Southington, CT, 06489

Phone (860) 329-2777

Fax (860) 621-1076

Enumeration date Apr 14, 2006

Last updated in NPPES Dec 17, 2013

Taxonomy & licenses

2251P0200X Pediatric Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 004454 (CT) 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

Is NPI 1659335859 active?

Yes, as of the latest NPPES snapshot, NPI 1659335859 is active (record last updated 2013-12-17).

How do I verify Cathleen Clark's NPI record?

Cross-check NPI 1659335859 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-17.