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

Ms. Charlotte O'Toole

Pediatric Physical Therapist in Lowell, MA · enumerated 2007.

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

National Provider Identifier

1366623498

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Registry record

Entity type Individual (Type 1)

Name Ms. Charlotte O'Toole

Sex Female

Practice address Lowell, MA, 01852

Phone (978) 453-8331

Fax (978) 453-9254

Enumeration date Nov 16, 2007

Last updated in NPPES Nov 16, 2007

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

Taxonomy & licenses

2251P0200X Pediatric Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 4191 (MA) Primary

225XP0200X Pediatric Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 4191 (MA) Secondary

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 Charlotte O'Toole?

The National Provider Identifier (NPI) for Charlotte O'Toole is 1366623498, a Type 1 (individual) record in the CMS NPPES registry.

Where does Charlotte O'Toole practice?

The practice location on file with NPPES is in Lowell, MA. 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 2007-11-16.