Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Anna Larrison, RN

Registered Nurse in Aurora, IL · enumerated 2024.

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

National Provider Identifier

1023841251

Verified

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Registry record

Entity type Individual (Type 1)

Name Anna Larrison

Credential RN

Sex Female

Practice address 400 N Highland Ave, Aurora, IL, 60506

Phone (630) 892-4355

Enumeration date Aug 22, 2024

Last updated in NPPES Aug 22, 2024

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 041389756 (IL) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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 Anna Larrison?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-22.