Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Heather L. Mayer, APNP

Nurse Practitioner in Oconto, WI · enumerated 2008.

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

National Provider Identifier

1053579441

Verified

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Registry record

Entity type Individual (Type 1)

Name Heather L. Mayer

Credential APNP

Sex Female

Practice address 620 Smith Ave, Oconto, WI, 54153

Phone (920) 834-4110

Fax (920) 834-4117

Enumeration date Jun 2, 2008

Last updated in NPPES Jun 2, 2008

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 147479-30 (WI) 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 Heather Mayer practice?

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

What is the NPI number for Heather Mayer?

The National Provider Identifier (NPI) for Heather Mayer is 1053579441, 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 2008-06-02.