NPPES file of Aug 9, 2026

Joan L. Kortbein, RD

Registered Dietitian · Tomah, WI

Joan L. Kortbein, RD is a registered dietitian with a practice address in Tomah, Wisconsin, and NPI 1245236538, issued on Jun 22, 2005. Check the license (Wisconsin 900, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245236538
Name
Joan L. Kortbein
Credential
RD
Primary taxonomy
Registered Dietitian 133V00000X
License number
900 WI
Self-reported in NPPES; status is on the state search
Practice location
1330 N Superior Ave, Tomah, WI 54660
Phone
(608) 372-4111
Enumerated
Jun 22, 2005
Record last updated
Apr 23, 2013 (not updated in 13 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20050309000072); accepts Medicare assignment
Medical or professional school
University Of Wisconsin School Of Medicine, 1990
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 1,457 in Wisconsin → Look up another NPI →

Also registered at 1330 N Superior Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amy Atherton, O.D.Optometrist1386053429
  2. Aaron Butler, M.D.Orthopaedic Surgery Physician1962450775
  3. Rick Erdman, MDInternal Medicine Physician1952306011
  4. Brent FuerbringerPodiatrist1831586239
  5. Nancy Heerens-Knudson, PAMedical Physician Assistant1932104478
  6. Kelly Hodgson-Kline, MDPediatrics Physician1508862699

Verify Joan L. Kortbein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 900    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Gundersen Clinic LtdSparta, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Joan L. Kortbein among 1,457 registered dietitian records in Wisconsin

Joan L. Kortbein, RD is one of 1,457 registered dietitian records with a practice address in Wisconsin. 12% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 97% newer
  • In a Medicare fileYes · 12% of these records are
  • In the CMS Doctors and Clinicians fileYes · 13% of these records are
  • Graduated1990 · median 2013 among the 182 with a school on file
  • Record last updated2013 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

16 registered dietitian records list a practice address in Tomah

They are 16 of the 697 NPPES records with a practice address in Tomah, and 1,457 registered dietitian records in Wisconsin.

All 1,457 in Wisconsin → Every provider in Tomah → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Moriah BoyumTomah, WI 546601144658352
  2. Kelly Christen, R.D.Tomah, WI 546601457457822
  3. Lauren Eggen, REGISTERED DIETITIANTomah, WI 546601457990475
  4. Nancy Frost-Meyer, MS, RDN, CDCES, CDTomah, WI 546601508961152
  5. Alyssa Hovda, RD, CSO, CD, CDCESTomah, WI 546601548804511
  6. Kathleen Johnson, R.D.Tomah, WI 546601396856845
  7. Ann Kiel, RDTomah, WI 546601356453336
  8. Andrea Kundert, R.D.Tomah, WI 546601932345774

Common questions

What is Joan L. Kortbein, RD's NPI number?

Joan L. Kortbein, RD's National Provider Identifier (NPI) is 1245236538, issued on Jun 22, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Joan L. Kortbein, RD located?

The NPPES record lists a practice address at 1330 N Superior Ave, Tomah, WI, 54660. Phone: (608) 372-4111. Providers update this record themselves, so call before visiting.

How can I verify Joan L. Kortbein, RD's license?

NPPES lists Wisconsin license number 900, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.