Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alix Mertens, PA-C

Q: What is the NPI number for Alix Mertens?

The National Provider Identifier (NPI) for Alix Mertens is 1376184549, a Type 1 (individual) record in the CMS NPPES registry.

Physician Assistant in Milwaukee, WI · enumerated 2019.

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

National Provider Identifier

1376184549

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Registry record

Entity type Individual (Type 1)

Name Alix Mertens

Credential PA-C

Sex Female

Practice address 2801 W Kinnickinnic River Pkwy, Milwaukee, WI, 53215

Phone (414) 649-3370

Enumeration date Sep 30, 2019

Last updated in NPPES Dec 3, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 4730-23 (WI) Primary

Other identifiers

Identifier	Type	State	Issuer
100095045	Medicaid	WI	-

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 Alix Mertens practice?

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

What is the NPI number for Alix Mertens?

The National Provider Identifier (NPI) for Alix Mertens is 1376184549, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-03.