Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann M Mayer, NP

Q: What is the NPI number for Ann Mayer?

The National Provider Identifier (NPI) for Ann Mayer is 1295387975, a Type 1 (individual) record in the CMS NPPES registry.

Nurse Practitioner in Oshkosh, WI · enumerated 2019.

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

National Provider Identifier

1295387975

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Registry record

Entity type Individual (Type 1)

Name Ann M Mayer

Credential NP

Sex Female

Practice address 855 N Westhaven Dr, Oshkosh, WI, 54904

Phone (920) 303-8700

Enumeration date Jul 12, 2019

Last updated in NPPES Jan 16, 2024

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 9092-033 (WI) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
100090713	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 Ann Mayer practice?

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

What is the NPI number for Ann Mayer?

The National Provider Identifier (NPI) for Ann Mayer is 1295387975, 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 2024-01-16.