Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Callie Nielsen

Physician Assistant in Provo, UT · enumerated 2024 · practices at Lifestyle Mental Health.

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

National Provider Identifier

1346089570

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Registry record

Entity type Individual (Type 1)

Name Callie Nielsen

Sex Female

Practice address 333 W 2230 N Ste 225, Provo, UT, 84604

Phone (801) 477-7189

Enumeration date May 20, 2024

Last updated in NPPES Oct 10, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers 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 Callie Nielsen?

The National Provider Identifier (NPI) for Callie Nielsen is 1346089570, a Type 1 (individual) record in the CMS NPPES registry.

Where does Callie Nielsen practice?

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

Other providers at this practice address

Browse all →

Alex Mageno Psychiatry Physician · Provo, UT NPI 1538727284 Lifestyle Mental Health Psychiatry Physician · Provo, UT NPI 1831030147

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-10.