Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Stephanie Rae Mastny, APRN C

Family Nurse Practitioner in Grand Island, NE · enumerated 2006.

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

National Provider Identifier

1376523258

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Registry record

Entity type Individual (Type 1)

Name Mrs. Stephanie Rae Mastny

Credential APRN C

Sex Female

Practice address 908 N Howard Ave, Ste 109, Grand Island, NE, 68803

Phone (308) 380-3498

Enumeration date Jan 18, 2006

Last updated in NPPES Apr 8, 2026

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 49832 (NE) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 110402 (NE) 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 Stephanie Mastny?

The National Provider Identifier (NPI) for Stephanie Mastny is 1376523258, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephanie Mastny practice?

The practice location on file with NPPES is in Grand Island, NE. 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 2026-04-08.