NPPES file of Aug 9, 2026

Registered Dietitian in Illinois

2,870 NPPES records list registered dietitian with a practice address in Illinois, 23 per 100,000 residents, the 22nd highest rate of 51. Chicago and Peoria have the most; each record links to the provider's NPI and the Illinois license search. Page 37 of 58.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 133V00000X · method

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

Chicago has the most, 935

  1. Chicago935
  2. Peoria65
  3. Naperville60
  4. Springfield60
  5. Hines58

Registered Dietitian records in Illinois

  1. Anila Nijhawan, R.D.Flossmoor, IL 604221942378385
  2. Kathryne Nikas, RD, LDN.Hoffman Estates, IL 601691699951244
  3. Christina NiklasOak Park, IL 603041952789919
  4. Gina NikoleitBurr Ridge, IL 605271871317214
  5. Laura Nitowski, RDN, LDNChicago, IL 606051770069015
  6. Alison Nitti, RDN, LDNHoffman Estates, IL 601691528944501
  7. Aisha Nix-Hughes, RDNFlossmoor, IL 604221912611948
  8. Janna Nixon, MS, RDN, LDNGlenview, IL 600261518831080
  9. Brittany Norem, RDLisle, IL 605321821666413
  10. Dana Norris, RDChicago, IL 606111346872793
  11. Jennifer North, RDN, MBAChicago, IL 606121144683095
  12. Virginia Nothnagel, M.S., R.D., L.D.N.Chicago, IL 606121770717936
  13. Molly Novak, MS, RD, LDNElmhurst, IL 601261689243099
  14. Natalie Novak, R.D.Chicago, IL 606111932631033
  15. Kimberly Novotny, RD, LDNChicago, IL 606111720516735
  16. Ilana Nurko, RD, LDNChicago, IL 606111730604380
  17. Michelle Nussbaum, MS, RDN, CDCESChicago, IL 606221518664036
  18. Holly Nusser, MS, RDNChicago, IL 606141023930252
  19. Scott Nygren, RD, LNDNorth Chicago, IL 600641992095459
  20. Monica Nyman, MS RD LD INDecatur, IL 625261831272343
  21. Frankie O'Brien, MS, RD, CSSD, LDNChicago, IL 606141598366726
  22. Heidi O'BrienChicago, IL 606221275390072
  23. Amelia O'Brien-Combs, MPH, RDNChicago, IL 606131437815594
  24. Tara O'Connell, RDDekalb, IL 601151144013145
  25. Elizabeth O'Connor, RD, LDNChicago, IL 606121326443763
  26. Meagan O'Connor, MS, RDN, CSSD, LDNCarpentersville, IL 601101285424960
  27. Andrea O'Donnell, RD, LDNChicago, IL 606181740710060
  28. Erin O'Flaherty, RDEdwardsville, IL 620251649100983
  29. Megan O'GradyChicago, IL 606571174237689
  30. Katie O'Keefe, RDSkokie, IL 600771881062693
  31. Anne O'Malley, RD,LDNOak Lawn, IL 604531609808229
  32. Elizabeth O'Malley, RD, LDNWestmont, IL 605591740586924
  33. Lauren O'Meara, MS, RD, LDNDowners Grove, IL 605161457171878
  34. Nicole O'Neill, RDNRockford, IL 611081376170183
  35. Caitlin O'Rourke, RDHines, IL 601411063743276
  36. Kimberly O'Shaughnessy, MS, RD, LDNOak Lawn, IL 604531023630282
  37. Erin Oates, MS, RD, LDNChicago, IL 606571578099909
  38. Saray Ocampo, RDN, LDNChicago, IL 606161225925894
  39. Lisa Ocon, RDChicago, IL 606571568267946
  40. Ines Odulio, RD, LDNChicago, IL 606571457420192
  41. Lindsey Oettel, MBA, RDN, LDNGlenview, IL 600251790440980
  42. Susan Ofria, RDSchaumburg, IL 601931669393211
  43. Judith Ogara, LDGreat Lakes, IL 600881922058742
  44. Deborah OgnarGlenview, IL 600251104912211
  45. Elena Oh, MS. RDN. LDN, CDEBolingbrook, IL 604901972718245
  46. Uchenna Ohajunwa, MS, RD, LDNEvanston, IL 602011821207663
  47. Shaina Ohm, RD, LDNChicago, IL 606111528592268
  48. Laura Olejnik, RDDowners Grove, IL 605151689846461
  49. Alisa Oler, RDNSkokie, IL 600771861000994
  50. Adriana Oliva, NDSpringfield, IL 627041437817756

Source: CMS NPPES, primary taxonomy 133V00000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 22 of 51 per resident

  1. Pennsylvania24
  2. Colorado24
  3. Oklahoma23
  4. Illinois23
  5. Connecticut23
  6. Missouri22
  7. 50 states and D.C.20

Source: CMS NPPES, primary taxonomy 133V00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

7.8% of these records appear in a Medicare file, against 7.4% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Illinois7.8%
  2. United States7.4%

Registered Dietitian records in Illinois, measured

  • In a Medicare file224 of 2,870 · 7.8% here, 7.4% nationally
  • In the CMS Doctors and Clinicians file269 · 9.4% here, 9.8% nationally
  • Not updated in five years or more1,693 · 59.0% here, 56.3% nationally
  • Median graduation year2014 · the 269 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 133V00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,870 NPPES records list registered dietitian (133V00000X) as their primary taxonomy with a practice address in Illinois: 23 per 100,000 residents against 20 nationally (50 states and D.C.). Chicago has 935 of them (33%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. North Carolina2,704
  2. Pennsylvania3,083
  3. Ohio2,581
  4. Florida3,443

States with a similar rate per 100,000

  1. Connecticut22.8
  2. Oklahoma23.3
  3. Missouri22.1
  4. Colorado23.7

The largest states

  1. California7,148
  2. Texas5,099
  3. New York4,724
  4. Florida3,443
  5. Pennsylvania3,083

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.