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 29 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. Theodore Dastych, M.D.Joliet, IL 604311205084431
  2. Swati Datta, D.O.Chicago, IL 606111386860534
  3. Melissa Dattalo, MD, MPHWheaton, IL 601871578705067
  4. Shazia Daudi, MDHuntley, IL 601421235137928
  5. Ramadevi Davarapalli, MDBolingbrook, IL 604401831171750
  6. Nayana Dave, M.D.Park Ridge, IL 600681003841255
  7. Pinakinprasad Dave, M.D.Calumet City, IL 604091720196876
  8. Shilpa Dave, DOAurora, IL 605061881624245
  9. Michael Davenport, MDChicago, IL 606531780619635
  10. Tracey Davenport, M.D.Lincolnwood, IL 607121114033826
  11. Alfonso David, M.D.Vienna, IL 629951942488978
  12. Elaine David, DOChicago, IL 606121851075279
  13. Jacqueline David, MDEvanston, IL 602011417016205
  14. Lisa Davidoff, M.D.Deerfield, IL 600151104115468
  15. Michael Davidovich, M.D.Chicago, IL 606121396784906
  16. John Davies, MDMoline, IL 612651437123064
  17. Edgar DavilaBurr Ridge, IL 605271063944205
  18. Ana Maria Davila MoralesChicago, IL 606121548892888
  19. Andrew DavisChicago, IL 606371275642167
  20. Elizabeth Davis, M.D,Chicago, IL 606121407056526
  21. Eric Davis, DOOak Lawn, IL 604531295539260
  22. Gary Davis, M.D.Evanston, IL 602011588605745
  23. Kara Davis, MDSouth Holland, IL 604731417991449
  24. Erin Davis-Delay, M.D.Woodstock, IL 600981215985387
  25. Sharbel Dawalibi, DOChicago, IL 606251235973678
  26. Whitney Dawson, M.DBlue Island, IL 604061376906164
  27. Mark Day, M.D.Staunton, IL 620881174679237
  28. Amit Dayal, MDHines, IL 601411205819877
  29. Muhammad Asim Dayala, MDChicago, IL 606161073201331
  30. Salomon Dayan, MDEvanston, IL 602011821385949
  31. Debalina De, M.D.Chicago, IL 606111588015184
  32. Wilberto De CastroFrankfort, IL 604231891063053
  33. Jocelyn De Jesus, MDLong Grove, IL 600471053592816
  34. Frank De La Cruz, MDChicago, IL 606121821611070
  35. Louis De La Garza, M.D.Chicago, IL 606161740448323
  36. Susan De La Torre, MDChicago, IL 606121639810237
  37. Lillian De Leon, MDChicago, IL 606291134142193
  38. Sherryl De Leon, M.D.Chicago, IL 606111841652369
  39. David De Marco, M.D.Maywood, IL 601531407064611
  40. Stefani De Sousa Romero, MDChicago, IL 606121801727847
  41. Mary Dea, DONaperville, IL 605631518951474
  42. Steven Deangeles, MDChicago, IL 606041467438630
  43. Noel Debacker, M.D.Chicago, IL 606111174623862
  44. Mark Debettencourt, MDMaywood, IL 601531043968761
  45. Rebecca Deboer, M.D.Burr Ridge, IL 605271730467887
  46. Michael Debre, MDMerrionette Park, IL 608031215044508
  47. Maribeth December, M.D.Park Ridge, IL 600681245275635
  48. Alan Deckard, M.D.Springfield, IL 627021104801190
  49. Norman Decker, M.D.Glen Ellyn, IL 601371336534650
  50. Nicole Decredico, M.D.Chicago, IL 606111942662556

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.