Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Luann S Clark, RN
Registered Nurse in Fort Atkinson, WI · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1013106921
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Registry record
Taxonomy & licenses
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.
Frequently asked questions
Where does Luann Clark practice?
What is the NPI number for Luann Clark?
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-16.