NPPES file of Aug 9, 2026

Internal Medicine Physician in Illinois

7,238 NPPES records list internal medicine physician with a practice address in Illinois, 58 per 100,000 residents, the 9th highest rate of 51. Chicago and Maywood have the most; each record links to the provider's NPI and the Illinois license search. Page 25 of 145.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · 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, 2,867

  1. Chicago2,867
  2. Maywood257
  3. Springfield196
  4. Evanston178
  5. Oak Lawn173

Internal Medicine Physician records in Illinois

  1. Adam CifuChicago, IL 606371982766432
  2. William Cifuentes, MDUrbana, IL 618011720103153
  3. Debbie Cihak, M.D.Galena, IL 610361417908906
  4. Scott Cinnamon, M.D.Champaign, IL 618221851326755
  5. Gabriela Ciofoaia, M.D.Peoria, IL 616371386027076
  6. Lauren Ciulla, MDChicago, IL 606371508412727
  7. Anthony Clark, M.D.Chicago, IL 606121225062615
  8. Kristina ClarkMaywood, IL 601531912848656
  9. Michael Clark, MDMaywood, IL 601531033185434
  10. Richard Clark, MDChicago, IL 606311154314300
  11. Gregory Clarke, M.D.Chicago, IL 606011609996420
  12. Jacob Clarke, MDMaywood, IL 601531922757541
  13. John Clarke, MDChicago, IL 606111750464574
  14. Michael Clarke, MDChicago, IL 606371659992923
  15. Peter Clarke, MDChicago, IL 606121366485831
  16. Marcie Claybon, MDChicago, IL 606541831344373
  17. Douglas Cleary, MDWinnetka, IL 600931720357981
  18. Ninah Clegg-Johnson, DOPeoria, IL 616371568992873
  19. James Clement, M.D.Carbondale, IL 629011588089106
  20. Bradley Clifford, MDMaywood, IL 601531912971227
  21. Jack Clifton, M.D.Chicago, IL 606121164441887
  22. Michael Close, M.D.Chicago, IL 606401992893184
  23. Daniel Co, MDLockport, IL 604411609858547
  24. Emelita Co, M.D.Oak Park, IL 603011396813069
  25. Yolanda Co, M.D.Elmhurst, IL 601261811985054
  26. Aaron Coates, MDRockford, IL 611141871603050
  27. Juan Cobo, MDChicago, IL 606081588745418
  28. Michael Cochran, M.D.Bloomington, IL 617011831176692
  29. Patrick Coello De La Cruz, MDChicago, IL 606401710774567
  30. Gillian Coffey, MDChicago, IL 606121093552747
  31. Nooshin Cohanim, M.D.Chicago, IL 606421780788968
  32. Arielle CohenMaywood, IL 601531053948505
  33. Brian Cohen, MDPeoria, IL 616051710991856
  34. Gerald Cohen, M.DDes Plaines, IL 600161225100209
  35. Reuben Cohen, MDGlenview, IL 600251457542912
  36. James Cohn, MDChicago, IL 606111952367054
  37. Maria Cole, DOJoliet, IL 604351215922679
  38. Susan Cole, MDPeoria, IL 616141144313388
  39. Tracy Cole, MDLoves Park, IL 611111780794966
  40. Cedric Coleman, MDChicago, IL 606431104809755
  41. Glennetta Coleman, MDRockford, IL 611121063449296
  42. Jennifer Colleton, M.D.Chicago, IL 606151376743260
  43. Benjamin Collie, M.D.Carbondale, IL 629011689029654
  44. Angela Collins, MDChicago, IL 606121205328325
  45. Dianne Collins, M.D.Chicago, IL 606151164483087
  46. Eileen Collins, M.D.Lombard, IL 601481851359103
  47. James Collins, MDNaperville, IL 605401225066020
  48. Kathleen Collins, M.D.Champaign, IL 618221962419432
  49. Michael Collins, MDAurora, IL 605061366467680
  50. Danielle Collons, MDChicago, IL 606121316443245

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 9 of 51 per resident

  1. Hawaii63
  2. New York62
  3. Delaware58
  4. Illinois58
  5. Michigan57
  6. Pennsylvania56
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

72.5% of these records appear in a Medicare file, against 78.7% 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. Illinois72.5%
  2. United States78.7%

Internal Medicine Physician records in Illinois, measured

  • In a Medicare file5,251 of 7,238 · 72.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file3,584 · 49.5% here, 61.4% nationally
  • Not updated in five years or more3,434 · 47.4% here, 55.4% nationally
  • Median graduation year2003 · the 3,580 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

7,238 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Illinois: 58 per 100,000 residents against 44 nationally (50 states and D.C.). Chicago has 2,867 of them (40%).

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. Pennsylvania7,300
  2. Massachusetts6,825
  3. Michigan5,735
  4. Texas9,175

States with a similar rate per 100,000

  1. Delaware58.1
  2. New York61.7
  3. Hawaii62.9
  4. Maryland63.2

The largest states

  1. California17,696
  2. New York12,067
  3. Florida10,151
  4. Texas9,175
  5. Pennsylvania7,300

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.