Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cristina Ann Custer, NP

Nurse Practitioner in Mauston, WI · enumerated 2005.

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

National Provider Identifier

1548241821

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Registry record

Entity type Individual (Type 1)

Name Cristina Ann Custer

Credential NP

Sex Female

Practice address 1040 Division St, Mauston, WI, 53948

Phone (608) 847-5000

Enumeration date Nov 14, 2005

Last updated in NPPES Jul 16, 2007

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 107628 (WI) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 893 (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

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Cristina Custer?

Cristina Custer is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Kimberley Sabey Family Medicine Physician · Mauston, WI NPI 1497749188 Rodney Malinowski Surgery Physician · Mauston, WI NPI 1699761130 Samuel Williams Physician Assistant · Mauston, WI NPI 1871580332 Dennis Ness Family Medicine Physician · Mauston, WI NPI 1598752065 Timothy Napier Surgery Physician · Mauston, WI NPI 1952398422 James Speichinger Obstetrics & Gynecology Physician · Mauston, WI NPI 1700873270 Leon Radant Family Medicine Physician · Mauston, WI NPI 1982691457 Jane Peterson-Kattenbraker Family Medicine Physician · Mauston, WI NPI 1245227719

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-16.