Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Natalie Renee Larsen, RDN, LDN

Registered Dietitian in Lisle, IL · enumerated 2024.

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

National Provider Identifier

1790548899

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Registry record

Entity type Individual (Type 1)

Name Natalie Renee Larsen

Credential RDN, LDN

Sex Female

Practice address 650 Warrenville Rd Ste 100, Lisle, IL, 60532

Phone (847) 318-3013

Fax (833) 290-5413

Enumeration date Feb 1, 2024

Last updated in NPPES Mar 26, 2026

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 5343-29 (WI) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 164.010088 (IL) Primary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86359191 (AZ) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License DT90573 (TX) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86359191 (CO) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86359191 (VA) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86359191 (MI) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86359191 (NJ) Secondary

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 Natalie Larsen?

Natalie Larsen is registered in NPPES with the primary taxonomy of Registered Dietitian. 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 2026-03-26.