Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Olivia Callister

Marriage & Family Therapist in Laguna Beach, CA · enumerated 2022.

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

National Provider Identifier

1346976909

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Registry record

Entity type Individual (Type 1)

Name Olivia Callister

Sex Female

Practice address 1278 Glenneyre St Unit 260, Laguna Beach, CA, 92651

Phone (310) 938-7335

Enumeration date Jul 26, 2022

Last updated in NPPES Dec 1, 2025

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service 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

Where does Olivia Callister practice?

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

What is the NPI number for Olivia Callister?

The National Provider Identifier (NPI) for Olivia Callister is 1346976909, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-01.