NPPES file of Aug 9, 2026

Catherine Joanne Claysen, M.S.R.D.L.D.

Registered Dietitian · Chicago, IL

Catherine Joanne Claysen, M.S.R.D.L.D. is a registered dietitian with a practice address in Chicago, Illinois, and NPI 1912089392, issued on Oct 19, 2006. Check the license with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1912089392
Name
Catherine Joanne Claysen
Credential
M.S.R.D.L.D.
Primary taxonomy
Registered Dietitian 133V00000X
Practice location
201 East Huron Renal Clinic, Chicago, IL 60611
Phone
(312) 695-0592
Enumerated
Oct 19, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Catherine Joanne Claysen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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
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935 registered dietitian records list a practice address in Chicago

They are 935 of the 63,379 NPPES records with a practice address in Chicago, and 2,870 registered dietitian records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 935 in Chicago → All 2,870 in Illinois → Every provider in Chicago →

Other registered dietitian records in Illinois

  1. Taylor Aarns, RDNBelleville, IL1295475820
  2. Rebecca Abbatiello, RDWheaton, IL1437460748
  3. Heba Abdel Latief, RDNChicago, IL1821554593
  4. Duaa AbdullahBridgeview, IL1851253009
  5. Leen Abdulqader, RDBridgeview, IL1689372526
  6. Abdullah AbdulwahidPlainfield, IL1417880980
  7. Priscilla Abel Paul, RDNBement, IL1215782941
  8. Kathleen Abernathy, R.D., L.D.N.Lake Forest, IL1295020063
  9. Patricia AbernathyLa Grange, IL1063174837
  10. Michael Abromaitis, RDNSkokie, IL1710402797

Common questions

What is Catherine Joanne Claysen, M.S.R.D.L.D.'s NPI number?

Catherine Joanne Claysen, M.S.R.D.L.D.'s National Provider Identifier (NPI) is 1912089392, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Catherine Joanne Claysen, M.S.R.D.L.D. located?

The NPPES record lists a practice address at 201 East Huron Renal Clinic, Chicago, IL, 60611. Phone: (312) 695-0592. Providers update this record themselves, so call before visiting.

How can I verify Catherine Joanne Claysen, M.S.R.D.L.D.'s license?

Search the Illinois 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. 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.