NPPES file of Aug 9, 2026

Family Nurse Practitioner in Illinois

7,639 NPPES records list family nurse practitioner with a practice address in Illinois, 61 per 100,000 residents, the 40th highest rate of 51. Chicago and Springfield have the most; each record links to the provider's NPI and the Illinois license search. Page 100 of 153.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363LF0000X · 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, 1,567

  1. Chicago1,567
  2. Springfield309
  3. Rockford236
  4. Peoria215
  5. Aurora122

Family Nurse Practitioner records in Illinois

  1. Charity Nyuguto, FNPCSwansea, IL 622261013663160
  2. Amy O'Brien, FNPBloomington, IL 617011023480365
  3. Joanne O'Brien, FNP-BCSpringfield, IL 627031669447892
  4. Maureen O'Brien, MS, APRN, CNPLincolnshire, IL 600691699911461
  5. Meghan O'Brien, FNP-CNorridge, IL 607061215813548
  6. Bridget O'Brien Fagan, NPChicago, IL 606111376578211
  7. Margaret O'Callaghan, NURSE PRACTITIONERChicago, IL 606281184507014
  8. Annemarie O'Connor, NPChicago, IL 606371467641613
  9. Lauren O'Connor, NPLisle, IL 605321114531647
  10. Susan O'Connor, NP-CNaperville, IL 605631992297899
  11. Brookann O'DellSpringfield, IL 627811649893389
  12. Teresa O'Donnell, APNElk Grove Village, IL 600071457865172
  13. Erin O'Donohue, APNChicago, IL 606111912235565
  14. Kathryn O'Grady, APN-CNPDowners Grove, IL 605151902901168
  15. Nicole O'Grady, MSN, FNP-CMatteson, IL 604431376225177
  16. Katie O'Halloran, FNP-BCMattoon, IL 619381104427293
  17. Victoria O'Hanlon, APRN FNP-CMarseilles, IL 613411427644210
  18. Lucy O'KeefeChicago, IL 606121861197238
  19. Mary O'MalleyLake Bluff, IL 600441639054505
  20. Maggie O'Malley Franks, APNSchaumburg, IL 601941821346297
  21. Mary O'Meara, FNPRockford, IL 611071033675087
  22. Katherine O'Neil, FNP-BCSpringfield, IL 627031841479896
  23. Susan O'Neill, NPNaperville, IL 605651659385722
  24. Emily O'Reilly, APNPlano, IL 605451841070943
  25. Kari O'Rourke, ARNPMokena, IL 604481932342532
  26. Kathleen O'Rourke, DNPChicago, IL 606261790374973
  27. Hira Oad, APNGlenview, IL 600251659845998
  28. Diana Oakes, NPChicago, IL 606111154377588
  29. Emma Oanes, DNP, APRN, FNP-BCRobbins, IL 604721326696766
  30. Ray ObasekiDowners Grove, IL 605151326557919
  31. Maria Teresa Obenza, MSN, FNP-BCBarrington, IL 600101649520990
  32. Amber Oberheim, APNMonticello, IL 618561174684278
  33. Cynthia Oberholtzer, APNGalesburg, IL 614011770037251
  34. Laura Oberholz, FNPPeru, IL 613541396110490
  35. Nicole Obermeyer, APRNOak Lawn, IL 604531073270211
  36. Charity ObidiChicago, IL 606371205781200
  37. Sandra Obilade, APNChicago, IL 606121245655422
  38. Adaku Obodoakor, NPHazel Crest, IL 604291336899236
  39. Grace ObohChampaign, IL 618221194576793
  40. Natasha Obradovic, APN-CNPBuffalo Grove, IL 600891306482187
  41. Benz ObreroLibertyville, IL 600481972014272
  42. Sharon Obrien, DNP, APRN, FNP-BCChicago, IL 606071023647443
  43. Karina Ocegueda, FNP-BCChicago, IL 606171841148244
  44. Erika OcegueraWest Dundee, IL 601181568082311
  45. Cristina OchoaTinley Park, IL 604771750270161
  46. Maira Ochoa, APNHarvey, IL 604261003303769
  47. Joy OchonChicago, IL 606121306206545
  48. Michael OconnorChicago, IL 606121861352585
  49. Stacey Oddera, APRNAnna, IL 629061558964080
  50. Mary Odefadehan, FNP-CArlington Heights, IL 600051881212157

Source: CMS NPPES, primary taxonomy 363LF0000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 40 of 51 per resident

  1. Idaho62
  2. Iowa61
  3. North Carolina61
  4. Illinois61
  5. Colorado59
  6. Minnesota58
  7. 50 states and D.C.71

Source: CMS NPPES, primary taxonomy 363LF0000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

77.8% of these records appear in a Medicare file, against 75.1% 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. Illinois77.8%
  2. United States75.1%

Family Nurse Practitioner records in Illinois, measured

  • In a Medicare file5,941 of 7,639 · 77.8% here, 75.1% nationally
  • In the CMS Doctors and Clinicians file4,780 · 62.6% here, 57.1% nationally
  • Not updated in five years or more3,004 · 39.3% here, 40.5% nationally
  • Median graduation year2018 · the 4,778 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363LF0000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

7,639 NPPES records list family nurse practitioner (363LF0000X) as their primary taxonomy with a practice address in Illinois: 61 per 100,000 residents against 71 nationally (50 states and D.C.). Chicago has 1,567 of them (21%).

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. Pennsylvania7,209
  2. Georgia8,635
  3. North Carolina6,631
  4. Virginia6,474

States with a similar rate per 100,000

  1. Iowa61.5
  2. Idaho61.8
  3. Colorado59.4
  4. Utah63.4

The largest states

  1. Florida22,340
  2. Texas21,242
  3. California16,966
  4. New York14,805
  5. Ohio9,647

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.