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 107 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. Avinish ReddyChicago, IL 606121245625953
  2. Manasa Reddy, M.DChicago, IL 606121427404573
  3. Neha Reddy, MD, MAChicago, IL 606111962876870
  4. Srividya Reddy, M.B.,B.SPeoria, IL 616031922388255
  5. Sunya ReddyChicago, IL 606111295675452
  6. Surekha Reddy, MDChicago, IL 606121609969633
  7. Tara Reddy, M.D.Chicago, IL 606111376860775
  8. Jennifer Reed, M.D.Stronghurst, IL 614801730525320
  9. William Reed, MDChicago, IL 606111538231212
  10. Lisa Reeder, MDEvanston, IL 602081952395659
  11. David Reem, MDMacomb, IL 614551336124668
  12. Fnu Reem Imtiaz, MDChicago, IL 606571720711138
  13. Joshua Reese, DOEvanston, IL 602011912700162
  14. Thomas Reese, M.D.Mt Prospect, IL 600561053482877
  15. Melissa Reeves, MDLibertyville, IL 600481942212311
  16. Dileep Kumar Reddy RegallaRockford, IL 611081194379867
  17. James Regan, M.D.Maywood, IL 601531699017285
  18. Kevin Regan, MDLisle, IL 605321205823275
  19. Orna Regen, MDChicago, IL 606411134327604
  20. Muhammad Rehman, MDPark Ridge, IL 600681548910805
  21. Steven Rehusch, M.D.East Dundee, IL 601181962513242
  22. Abby ReichQuincy, IL 623011700966124
  23. Amy Reid, MD, PHDChicago, IL 606371992144463
  24. Janet Reilly, MDPalatine, IL 600671508961129
  25. Zachary ReinsteinChicago, IL 606371780167981
  26. Isaac Reiser, M.D.Chicago, IL 606341811987019
  27. Mark Reiter, M.D.Oak Lawn, IL 604531902864408
  28. Reshma Relwani, DOLemont, IL 604391053554071
  29. Guohui RenChicago, IL 606121942615539
  30. Victor Rendon, MDChicago, IL 606121447048319
  31. Dinesh Kumar Rengarajan, M.D.Chicago, IL 606121194166595
  32. Heidi Renner, MDMaywood, IL 601531972706299
  33. Andrew Repasy, M.D.Chicago, IL 606111942383872
  34. Gemilo Resaba, M.D.Benton, IL 628121760427199
  35. John Revis, MDGlenview, IL 600251174682637
  36. Adam Reyburn, M.D.Quincy, IL 623011396710042
  37. Alvaro Reyes, MDChicago, IL 606081588747596
  38. Carlos Reyes, MDChicago, IL 606121770417032
  39. Christopher Reyes, M.D.Pinckneyville, IL 622741407828940
  40. Crisanto Reyes, M.D.Milford, IL 609531154461978
  41. Maria Reyes, M.D.Chicago, IL 606571508805029
  42. Guillermo Reyes Martinez, MDChicago, IL 606571033912787
  43. Dilini Reyhart, M.D.Peoria, IL 616371508149816
  44. Jannet Reyna-Quito, MDChicago, IL 606121891215752
  45. Carlos Reynes, M.D.River Forest, IL 603051013081959
  46. Albert Reynolds, MDBurr Ridge, IL 605271639155534
  47. Jonathan ReynoldsChicago, IL 606111316365950
  48. Abdolmajid Rezvan, M.D.Chicago, IL 607071841398963
  49. Joyce Rhee, MDUrbana, IL 618011649347550
  50. Kyunghoon Rhee, MDDes Plaines, IL 600161699391714

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.