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 32 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. Peggy Marchini, RDLDDekalb, IL 601151962453290
  2. Kendall Marek, RDBatavia, IL 605101336007012
  3. Samantha Marek, R.D.Westmont, IL 605591902157191
  4. Amy Margulies, R.D,, C.D.E,, L,D.N.Chicago, IL 606111225082290
  5. Kristen Marias, RDNFrankfort, IL 604231417461864
  6. Vickie Marie, MA, RD, LDNChicago, IL 606281841337086
  7. Dajana Marin, RDChicago, IL 606161083311039
  8. Roxana Marincas, RD, LDNSchaumburg, IL 601731790229425
  9. Jasmina Markovic, RDChicago, IL 606131730431776
  10. Demetria Maropoulos, RDN, LDNChicago, IL 606251174239453
  11. Katie Marquardt, RDChicago, IL 606111881739399
  12. Michaela Marquez, MS, RDN, LDNElmhurst, IL 601261376161067
  13. Abigail MarroquinChicago, IL 606161417553835
  14. Deanne Marselle, RDShiloh, IL 622211043340110
  15. Stephanie Marsh, RD, LDNMelrose Park, IL 601601255610044
  16. Emily MarshallPeoria, IL 616141508394214
  17. Kellee Marshall, RD, LDO Fallon, IL 622691679716476
  18. Emily MartinChicago, IL 606131851102586
  19. Michele Martin, RDMarion, IL 629591730440322
  20. Stephanie Martin, MS, RDN, LDNLibertyville, IL 600481033640602
  21. Ana Martinez, RDNCarol Stream, IL 601881568076545
  22. Jessica Martinez, RD, LDNChicago, IL 606141922611862
  23. Abigail Maslanka, RDWarrenville, IL 605551003619032
  24. Mary Maslanka, R.D., L.D.N.Chicago, IL 606311285616326
  25. Tiffany Mason, RDChicago, IL 606081679271282
  26. Brooke Massa, MS, RDTroy, IL 622941396468914
  27. Jennifer Mast, RDDanville, IL 618321467899575
  28. Heather Masters, RDCrystal Lake, IL 600121922480342
  29. Cristina Mastrangelo, RDChicago, IL 606141902731748
  30. Brianna Mastrodomenico, RD LDNChicago, IL 606071932935319
  31. Sherin Mathew, RD, LDNEvanston, IL 602021861898157
  32. Donna Matt, RD, LDN, CDEMoline, IL 612651528446416
  33. Emily Mattaliano, RDNChicago, IL 606421861315624
  34. Lisa Matthews, RD, LDNLibertyville, IL 600481073629911
  35. Sara Mattillion, RDN, LDNRockford, IL 611071336758903
  36. Kathy Mattingly, RD, LDNGrayslake, IL 600301245247022
  37. Joy Mattson-Petrusha, RDOrland Park, IL 604621063431377
  38. Jessica Maturrano, MS, RDN, LDNBartlett, IL 601031972421238
  39. Virginia Maust, RD, LDNWilmette, IL 600911194503540
  40. Emily Maxwell, RD, LDNChicago, IL 606161073900601
  41. Jennifer May, MS, RD, LDNChicago, IL 606121205373172
  42. Jessica May, MBA, RD, LDNSkokie, IL 600771720419393
  43. Erika Mayer, RDN, LDNRockford, IL 611141033949680
  44. Brittany MaykishChicago, IL 606141629823281
  45. Courtney Mayszak, RDN, LDNHighland Park, IL 600351386157527
  46. Alannah McBreenChicago, IL 606141558224519
  47. Rachel McBride, M.S., R.D.N.Decatur, IL 625261497293955
  48. Misti McCallister, MS, RDNBarry, IL 623121851114755
  49. Eileen McCarthy, MFN, RDN, LDN, CPT,Oak Park, IL 603011265673958
  50. Ashley McCartney, MS, RDN, LDNDanville, IL 618321912225871

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.