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 79 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. Francisco Martinez-Rodriguez, MDChicago, IL 606121609992668
  2. Gina MartiniMaywood, IL 601531346000346
  3. Mohammed Martini, MDSpringfield, IL 627021740973106
  4. Anthony Martino, M.D.Melrose Park, IL 601601457319337
  5. Manjit Marwah, MDChicago, IL 606121881815439
  6. Rachit Marwaha, M.DNaperville, IL 605401285168526
  7. Michael Marzec, MDAurora, IL 605061205847613
  8. Christopher Masi, MDBurr Ridge, IL 605271487716932
  9. Ellen Mason, M.D.Chicago, IL 606121407876501
  10. Thomas Mason, M.D.Chicago, IL 606371730114505
  11. Timothy Mason, MDMaywood, IL 601531366145583
  12. Huma Masood, M.DBellwood, IL 601041558526194
  13. Shahid Masood, MDJoliet, IL 604351780764241
  14. Abdallah Masri, MDChicago, IL 606121285296715
  15. Eyoab Massebo, MDUrbana, IL 618011639813868
  16. Bruce Massel, MDSkokie, IL 600771669419412
  17. John Matera, MDBlue Island, IL 604061770970931
  18. Della Mathew, MDBuffalo Grove, IL 600891629028428
  19. Gina Mathew, D.O.Addison, IL 601011992933204
  20. Jessey Mathew, MDCherry Valley, IL 610161639751860
  21. Liji Mathew, MDJoliet, IL 604351396788683
  22. Marina Mathew, M.D,Chicago, IL 606531487843330
  23. Maxine Mathew, M.D.Rockford, IL 611031578792511
  24. Sherine MathewSpringfield, IL 627021952831372
  25. Suja Mathew, M.D.Chicago, IL 606121457388340
  26. Theresa Mathew, M.D.Hoffman Estates, IL 601691215128079
  27. Tobby Mathew, M.D.Naperville, IL 605631962701342
  28. Edwin Mathews, DOJacksonville, IL 626501225657125
  29. Jason Mathias, MDChicago, IL 606111033373329
  30. Hema Mathur, MDBurbank, IL 604591972602845
  31. Jay Mathur, MDPeoria, IL 616371891182515
  32. Manish Mathur, MDStaunton, IL 620881598848194
  33. Virendra Mathur, MDBurbank, IL 604591689627010
  34. Neel MatiwalaChicago, IL 606121811786296
  35. Sunil Matiwala, M.D.Bloomingdale, IL 601081174555601
  36. Alvaro Matos Arana, MDChicago, IL 606571801529060
  37. Hannah MatthewsChicago, IL 606371861073256
  38. Jonathan Matthews, MD, PHDChicago, IL 606371760286041
  39. Samreen Mattoo, M.D.Melrose Park, IL 601601003184128
  40. Leslie Mattson, M.D.Bloomingdale, IL 601081487975181
  41. Morris Mauer, M.D.Chicago, IL 606141215933825
  42. Laura Maurer, MD, MPHChicago, IL 606111609305739
  43. Joanna Maurice, M.D.Oak Lawn, IL 604531538173992
  44. Ana Clara MauroChicago, IL 606121194188011
  45. Hans Mautong Vasquez, M.DChicago, IL 606121013750348
  46. Niraj Mavani, M.D.Chicago, IL 606571669813762
  47. Feliks Mavashev, MDChicago, IL 606401215946603
  48. Harbans Mavi, MDMt Prospect, IL 600561710052436
  49. Bernadette Mayer, MDChicago, IL 606461326142654
  50. Michael MayerChicago, IL 606371871175760

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.