Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Charlotte Louisa Blackburn

Licensed Practical Nurse in Mukwonago, WI · enumerated 2017.

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

National Provider Identifier

1851811533

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Registry record

Entity type Individual (Type 1)

Name Charlotte Louisa Blackburn

Sex Female

Practice address Mukwonago, WI, 53149

Phone (414) 828-1259

Enumeration date Jun 22, 2017

Last updated in NPPES Jul 21, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

164W00000X Licensed Practical Nurse Nursing Service Providers · License 312294 (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

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 Charlotte Blackburn?

Charlotte Blackburn is registered in NPPES with the primary taxonomy of Licensed Practical Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.