Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Eileen O'Casey, MS OTR/L

Occupational Therapist in Arlington, VA · enumerated 2018.

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

National Provider Identifier

1740798321

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Registry record

Entity type Individual (Type 1)

Name Eileen O'Casey

Credential MS OTR/L

Sex Female

Practice address 3700 N Delaware St, Arlington, VA, 22207

Phone (703) 228-5275

Enumeration date Jan 17, 2018

Last updated in NPPES Jan 17, 2018

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 0119005730 (VA) 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

Where does Eileen O'Casey practice?

The practice location on file with NPPES is in Arlington, VA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Eileen O'Casey?

The National Provider Identifier (NPI) for Eileen O'Casey is 1740798321, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-17.