Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Chelsea R. Guenzler, RDN

Registered Dietitian in Madison, WI · enumerated 2017.

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

National Provider Identifier

1275067985

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Registry record

Entity type Individual (Type 1)

Name Chelsea R. Guenzler

Credential RDN

Sex Female

Practice address 20 S Park St, Madison, WI, 53715

Phone (608) 287-2770

Fax (608) 287-2777

Enumeration date Apr 19, 2017

Last updated in NPPES Jul 30, 2021

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 2921-29 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1275067985 active?

Yes, as of the latest NPPES snapshot, NPI 1275067985 is active (record last updated 2021-07-30).

How do I verify Chelsea Guenzler's NPI record?

Cross-check NPI 1275067985 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Kimberly Kuncl Obstetrics Physician · Madison, WI NPI 1508850173 Sonya Thompson Obstetrics & Gynecology Physician · Madison, WI NPI 1043200991 Barbara Szachnowska Neurology Physician · Madison, WI NPI 1215900972 Barbara Oconnell Obstetrics & Gynecology Physician · Madison, WI NPI 1174599237 Bryan Magenheim Gastroenterology Physician · Madison, WI NPI 1124094156 Laurel Mark Internal Medicine Physician · Madison, WI NPI 1629044664 Richard Day Internal Medicine Physician · Madison, WI NPI 1972570653 Tanya Hansen Nutrition Education Nutritionist · Madison, WI NPI 1598732679

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-30.