NPPES file of Aug 9, 2026

Deborah Regnier, R.D.L.D.N.

Registered Dietitian · Chicago, IL

Deborah Regnier, R.D.L.D.N. is a registered dietitian with a practice address in Chicago, Illinois, and NPI 1447632252, issued on Jun 29, 2015. Check the license (Illinois 164.002103, as entered in NPPES) 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
1447632252
Name
Deborah Regnier
Credential
R.D.L.D.N.
Primary taxonomy
Registered Dietitian 133V00000X
License number
164.002103 IL
Self-reported in NPPES; status is on the state search
Practice location
5645 W Addison St, Chicago, IL 60634
Phone
(773) 282-7000
Enumerated
Jun 29, 2015
Record last updated
Jun 29, 2015 (not updated in 11 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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8 nearest registered dietitian records → All 2,870 in Illinois → Look up another NPI →

Also registered at 5645 W Addison St

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

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  3. Anoja Attele, M.D.Cytopathology Physician1770713638
  4. Nada BanafaAcute Care Nurse Practitioner1194542449
  5. Kathleen Barak, APNNurse Practitioner1801322326
  6. Devon Beer, PT, DPTPhysical Therapist1003163262

Verify Deborah Regnier in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 164.002103    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 Illinois license search

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Deborah Regnier among 2,870 registered dietitian records in Illinois

Deborah Regnier, R.D.L.D.N. is one of 2,870 registered dietitian records with a practice address in Illinois. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2015, is newer than 38% of them.

  • NPI issued2015 · 38% of these records are older, 57% newer
  • In a Medicare fileNo · 8% of these records are
  • In the CMS Doctors and Clinicians fileNo · 9% of these records are
  • Record last updated2015 · 59% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

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 2,870 in Illinois → Every provider in Chicago → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Lindsey Bialk, RDChicago, IL 606341083477996
  2. Anita DavilaChicago, IL 606341497589717
  3. Ashley Fisher, RD LDNChicago, IL 606341962977421
  4. Brandee Grenda, RD, LDNChicago, IL 606341093211153
  5. Kristine Poelsterl, MBA, RDN, LDNChicago, IL 606341578423125
  6. Heather Ritter, RDNChicago, IL 606341104517986
  7. Yvonne Izquierdo, MS RDN LDNChicago, IL 606321962377465
  8. Annette BoogerdChicago, IL 606371245263383

Common questions

What is Deborah Regnier, R.D.L.D.N.'s NPI number?

Deborah Regnier, R.D.L.D.N.'s National Provider Identifier (NPI) is 1447632252, issued on Jun 29, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Deborah Regnier, R.D.L.D.N. located?

The NPPES record lists a practice address at 5645 W Addison St, Chicago, IL, 60634. Phone: (773) 282-7000. Providers update this record themselves, so call before visiting.

How can I verify Deborah Regnier, R.D.L.D.N.'s license?

NPPES lists Illinois license number 164.002103, as entered by the provider. 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.