NPPES file of Aug 9, 2026

General Practice Dentistry in Illinois

5,276 NPPES records list general practice dentistry with a practice address in Illinois, 42 per 100,000 residents, the 10th highest rate of 51. Chicago and Naperville have the most; each record links to the provider's NPI and the Illinois license search. Page 69 of 106.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 1223G0001X · 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, 1,148

  1. Chicago1,148
  2. Naperville98
  3. Rockford94
  4. Arlington Heights80
  5. Springfield73

General Practice Dentistry records in Illinois

  1. Oladimeji Ogbara, D.D.SBerwyn, IL 604021518128636
  2. Aaron Oge', DMDO Fallon, IL 622691417124058
  3. Unonmosen Ogufere, D.D.SGurnee, IL 600311164641940
  4. Jonathan OhChicago, IL 606111154076735
  5. Kevin Oh, DMDCicero, IL 608041881939882
  6. Sehun OhMount Vernon, IL 628641942613971
  7. Suzie Oh, DMDChicago, IL 606121043740491
  8. Cecelia Ohnesorg, DDSPalatine, IL 600671174646665
  9. James Ojjeh, D.M.D.Naperville, IL 605641235142852
  10. Chukwuma Okafor, DMDChicago Heights, IL 604111538053541
  11. Valdo Oleari, DDSDeerfield, IL 600151053807164
  12. Gregory Olenick, D.D.S.Wheaton, IL 601871275685224
  13. George Oliver, D.D.S.Orion, IL 612731245315761
  14. Jamil Olomi, DMDChicago, IL 606341194285742
  15. Andrew Olsen, D.D.SChicago, IL 606571245551985
  16. Gary Olson, DDSAledo, IL 612311750432324
  17. William Omerza, D.D.S.La Grange Park, IL 605261467615567
  18. Todd Omori, D.D.S.Chicago, IL 606571083874655
  19. Arel Ondoy, D.M.D.Oak Forest, IL 604521255457164
  20. Eric Ondoy, D.M.D.Orland Park, IL 604621659422350
  21. W Ongena, DDSRockford, IL 611071295896652
  22. Connie Onik, D. M. D.Naperville, IL 605401720319445
  23. Nissa Ophaso, DMDSchaumburg, IL 601731609280395
  24. Ernest Opiola, DDSVilla Park, IL 601811003135047
  25. Candace Opon, D.D.S.Crystal Lake, IL 600121053603365
  26. Joanne Oppenheim, D.D.S.Chicago, IL 606111477682169
  27. Troy Oracko, DMDAurora, IL 605051215503040
  28. Vicente Ordonez, DMDChicago, IL 606411013753060
  29. Scott Oren, D.D.S.Loves Park, IL 611111093877797
  30. Michael Ori, DDSHighland Park, IL 600351497107502
  31. Valente Oria, DDSChicago, IL 606021467649855
  32. Carla Orland, D.D.S.Riverside, IL 605461730399916
  33. James Orrington, D.D.SChicago, IL 606191639169691
  34. Terry Ortman, D.D.S.Alton, IL 620021316004310
  35. Harry Oryhon, DDSHomer Glen, IL 604911386794097
  36. William Osborn, D.M.D.Mount Vernon, IL 628641639241672
  37. Kraig Osborne, D.M.D.Springfield, IL 627041073663738
  38. Larry Osborne, D.M.D.Decatur, IL 625261982726352
  39. Deborah Osendi Travieso, DMDWestmont, IL 605591598651002
  40. Walter Osika, DMDEdwardsville, IL 620251114146842
  41. Robert Oslak, DDSWestchester, IL 601541881898674
  42. Richard Osmanski, D.D.S.Crystal Lake, IL 600141629243076
  43. Samuel Osobu, D.M.DBourbonnais, IL 609141184008542
  44. Claudia Osorio, D.D.S.Berwyn, IL 604021699785022
  45. Alexander Osovsky, DDSBuffalo Grove, IL 600891174665731
  46. Tatiana Ostanina, D.D.S.Carol Stream, IL 601881710044649
  47. Linda Oster, DDSOak Park, IL 603011851450779
  48. Jack Osterhaus, DDSLa Salle, IL 613011427480177
  49. Lance Ostrowski, DDSPark Ridge, IL 600681205096450
  50. Aminat Osuji, DDSEvanston, IL 602011578185716

Source: CMS NPPES, primary taxonomy 1223G0001X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 10 of 51 per resident

  1. Oregon45
  2. New Jersey44
  3. Colorado42
  4. Illinois42
  5. Montana41
  6. Washington41
  7. 50 states and D.C.37

Source: CMS NPPES, primary taxonomy 1223G0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

63.6% of these records appear in a Medicare file, against 62.1% 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. Illinois63.6%
  2. United States62.1%

General Practice Dentistry records in Illinois, measured

  • In a Medicare file3,354 of 5,276 · 63.6% here, 62.1% nationally
  • In the CMS Doctors and Clinicians file26 · 0.5% here, 0.5% nationally
  • Not updated in five years or more3,961 · 75.1% here, 73.6% nationally
  • Median graduation year2008 · the 26 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 1223G0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,276 NPPES records list general practice dentistry (1223G0001X) as their primary taxonomy with a practice address in Illinois: 42 per 100,000 residents against 37 nationally (50 states and D.C.). Chicago has 1,148 of them (22%).

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. Pennsylvania4,612
  2. Michigan4,088
  3. New Jersey4,085
  4. Ohio3,986

States with a similar rate per 100,000

  1. Colorado42.3
  2. Montana41.0
  3. Washington40.9
  4. Wyoming40.4

The largest states

  1. California17,852
  2. Texas10,056
  3. New York7,828
  4. Florida7,101
  5. Pennsylvania4,612

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.