Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joan L Kortbein, RD

Registered Dietitian in Tomah, WI · enumerated 2005.

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

National Provider Identifier

1245236538

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Registry record

Entity type Individual (Type 1)

Name Joan L Kortbein

Credential RD

Sex Female

Practice address 1330 N Superior Ave, Tomah, WI, 54660

Phone (608) 372-4111

Enumeration date Jun 22, 2005

Last updated in NPPES Apr 23, 2013

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 900 (WI) Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD 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

How do I verify Joan Kortbein's NPI record?

Cross-check NPI 1245236538 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1245236538 active?

Yes, as of the latest NPPES snapshot, NPI 1245236538 is active (record last updated 2013-04-23).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-23.