Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Heather Mccaslin Alilionis, REGISTERED NURSE

Registered Nurse in Dix Hills, NY · enumerated 2024.

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

National Provider Identifier

1770323495

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Registry record

Entity type Individual (Type 1)

Name Heather Mccaslin Alilionis

Credential REGISTERED NURSE

Sex Female

Practice address 197 Half Hollow Rd, Dix Hills, NY, 11746

Phone (631) 370-1700

Enumeration date May 30, 2024

Last updated in NPPES May 30, 2024

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 577515-1 (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

Where does Heather Mccaslin Alilionis practice?

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

What is the NPI number for Heather Mccaslin Alilionis?

The National Provider Identifier (NPI) for Heather Mccaslin Alilionis is 1770323495, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-30.