Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

April M Mack, M.S.

Q: What is the NPI number for April Mack?

The National Provider Identifier (NPI) for April Mack is 1831599414, a Type 1 (individual) record in the CMS NPPES registry.

Marriage & Family Therapist in Los Angeles, CA · enumerated 2014 · practices at Pacific Clinics.

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

National Provider Identifier

1831599414

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Registry record

Entity type Individual (Type 1)

Name April M Mack

Credential M.S.

Sex Female

Practice address 679 S New Hampshire Ave Ste 400, Los Angeles, CA, 90005

Phone (213) 639-2500

Enumeration date Sep 2, 2014

Last updated in NPPES Jun 3, 2025

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License LMFT117274 (CA) 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 April Mack?

The National Provider Identifier (NPI) for April Mack is 1831599414, a Type 1 (individual) record in the CMS NPPES registry.

Where does April Mack practice?

The practice location on file with NPPES is in Los Angeles, CA. 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 2025-06-03.