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Mr. Carl A Holborn, NURSE PRACTITIONER

Acute Care Nurse Practitioner in Waukesha, WI · enumerated 2021.

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

National Provider Identifier

1912597063

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Registry record

Entity type Individual (Type 1)
Name Mr. Carl A Holborn
Credential NURSE PRACTITIONER
Sex Male
Practice address 725 American Ave, Waukesha, WI, 53188
Phone (262) 928-1000
Enumeration date Jan 22, 2021
Last updated in NPPES Jan 22, 2021

Taxonomy & licenses

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 10588 (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.

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Frequently asked questions

Where does Carl Holborn practice?
The practice location on file with NPPES is in Waukesha, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Carl Holborn?
The National Provider Identifier (NPI) for Carl Holborn is 1912597063, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-22.