Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Catherine Marie Helldorfer, PTASSISTANT

Physical Therapy Assistant in Brunswick, ME · enumerated 2020 · practices at Horizons Living and Rehab Center, Inc.

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

National Provider Identifier

1649890138

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Registry record

Entity type Individual (Type 1)

Name Catherine Marie Helldorfer

Credential PTASSISTANT

Sex Female

Practice address 29 Maurice Dr, Brunswick, ME, 04011

Phone (207) 837-6628

Enumeration date Apr 24, 2020

Last updated in NPPES Apr 24, 2020

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License PA4027 (ME) 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

What is the NPI number for Catherine Helldorfer?

The National Provider Identifier (NPI) for Catherine Helldorfer is 1649890138, a Type 1 (individual) record in the CMS NPPES registry.

Where does Catherine Helldorfer practice?

The practice location on file with NPPES is in Brunswick, ME. 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 2020-04-24.