Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana L Longwell, OTR/L

Occupational Therapist in Sanford, NC · enumerated 2025 · practices at Dymond Speech & Rehab., P.A..

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

National Provider Identifier

1578436960

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Registry record

Entity type Individual (Type 1)

Name Diana L Longwell

Credential OTR/L

Sex Female

Practice address 113 Hillcrest Dr, Sanford, NC, 27330

Phone (919) 777-0240

Fax (919) 777-0499

Enumeration date Sep 24, 2025

Last updated in NPPES Oct 19, 2025

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0119007393 (VA) Secondary

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 17715 (NC) 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

What is the NPI number for Diana Longwell?

The National Provider Identifier (NPI) for Diana Longwell is 1578436960, a Type 1 (individual) record in the CMS NPPES registry.

Where does Diana Longwell practice?

The practice location on file with NPPES is in Sanford, NC. 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 2025-10-19.