Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Olivia Myszkowski, OTR/L

Occupational Therapist in Smithtown, NY · enumerated 2018 · practices at C.J. Allen Ot Upper Extremity & Hand Therapy, Pllc.

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

National Provider Identifier

1366912966

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Olivia Myszkowski

Credential OTR/L

Sex Female

Practice address 290 E Main St Ste 400, Smithtown, NY, 11787

Phone (631) 675-5777

Enumeration date Nov 27, 2018

Last updated in NPPES Feb 24, 2025

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 022881 (NY) 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 Olivia Myszkowski?

The National Provider Identifier (NPI) for Olivia Myszkowski is 1366912966, a Type 1 (individual) record in the CMS NPPES registry.

Where does Olivia Myszkowski practice?

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

Other providers at this practice address

Browse all →

C.J. Allen Ot Upper Extremity & Hand Therapy, Pllc Customized Equipment (DME) · Smithtown, NY NPI 1447955356

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-24.