NPPES file of Aug 9, 2026

Hematology & Oncology Physician in Illinois

666 NPPES records list hematology & oncology physician with a practice address in Illinois, 5.3 per 100,000 residents, the 10th highest rate of 51. Chicago and Maywood have the most; each record links to the provider's NPI and the Illinois license search. Page 12 of 14.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RH0003X · 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, 231

  1. Chicago231
  2. Maywood44
  3. Springfield31
  4. Park Ridge25
  5. Peoria24

Hematology & Oncology Physician records in Illinois

  1. Naushin Shareef, M.D.Elgin, IL 601231336377977
  2. Jaya Sharma, M.D.Chicago, IL 606081710184197
  3. Jori Sheade, M.D.Grayslake, IL 600301235587643
  4. Ashwin Sheelvanth, MDZion, IL 600991134115769
  5. Gail Shiomoto, M.D.Chicago, IL 606081700872074
  6. Sharon ShippRockford, IL 611141427079938
  7. Wasif Shirazi, M.D.Tinley Park, IL 604871558336149
  8. Keith Shulman, MDChicago, IL 606401881629855
  9. Matthew Siegel, MDNaperville, IL 605401639333263
  10. Richard Siegel, MDArlington Heights, IL 600051730176322
  11. Yael SimonsChicago, IL 606121811342215
  12. Shrey Sindhwani, M.D., PH.D.Chicago, IL 606371740916832
  13. Mansi SingaporiMaywood, IL 601531396240461
  14. Deepti Singh, MDChicago, IL 606571316000821
  15. Preet Singh, MDSpringfield, IL 627021881859833
  16. Veerpal Singh, MBBS,M.D.Elgin, IL 601231295952596
  17. Dorothy Sipkins, MDBurr Ridge, IL 605271225191737
  18. Kulumani Sivarajan, MDJoliet, IL 604351952396582
  19. Linda Skoog-Sluman, MDHinsdale, IL 605211912169277
  20. David Slivnick, MDLibertyville, IL 600481225082761
  21. Jessica Slostad, M.D.Chicago, IL 606121154785384
  22. John Smallwood, M.D.Flossmoor, IL 604221477629491
  23. Raymond Smith, MDQuincy, IL 623011477526259
  24. Scott Smith, MD PHDMaywood, IL 601531215914494
  25. Sonali SmithChicago, IL 606371215153226
  26. Urszula Sobol, M.D.Arlington Heights, IL 600051326203365
  27. Paolo Soriano, M.D.Springfield, IL 627021932581022
  28. Paul Sowray, M.D.Elk Grove Village, IL 600071205897436
  29. David Spillane, MD, MSCChicago, IL 606371083588024
  30. Krishnan Srinivasan, MDChampaign, IL 618201770579922
  31. Pramern Sriratana, M.D.Normal, IL 617611174522189
  32. Tomasz Srokowski, M.D.Springfield, IL 627021174671937
  33. Walter Stadler, MDZion, IL 600991033272547
  34. Margaret Stalker, MDChicago, IL 606111366182594
  35. Joanna Stankiewicz, M.D.Chicago, IL 606341043258254
  36. John Steffes, MDChicago, IL 606121639758857
  37. Regina Stein, MDChicago, IL 606111245241983
  38. Joyce Steinberg, MDNorthbrook, IL 600621104258193
  39. Patricia Steinecker, MDOak Brook, IL 605231588774038
  40. Adam Stepanovic, MDChicago, IL 606371881156289
  41. Sarah StettnerSpringfield, IL 627021285384453
  42. Patrick Stiff, MDMaywood, IL 601531558348433
  43. Wendy StockChicago, IL 606371588727093
  44. Roger Stupp, MDChicago, IL 606111295271088
  45. Seshan Subramanian, MDChicago, IL 606161083691950
  46. Oscar Sucre Astorga, M.DPark Ridge, IL 600681336716281
  47. Grace Suh, M.D.Arlington Heights, IL 600051619033065
  48. Donald Sweet, MDHinsdale, IL 605211811978133
  49. Randy SweisChicago, IL 606371093034498
  50. Russell Szmulewitz, M.D.Chicago, IL 606371508029703

Source: CMS NPPES, primary taxonomy 207RH0003X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 10 of 51 per resident

  1. Maine5.5
  2. Connecticut5.5
  3. New Hampshire5.4
  4. Illinois5.3
  5. Maryland5.1
  6. Wisconsin5.0
  7. 50 states and D.C.4.2

Source: CMS NPPES, primary taxonomy 207RH0003X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.8% of these records appear in a Medicare file, against 82.9% 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. Illinois83.8%
  2. United States82.9%

Hematology & Oncology Physician records in Illinois, measured

  • In a Medicare file558 of 666 · 83.8% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file461 · 69.2% here, 71.3% nationally
  • Not updated in five years or more324 · 48.6% here, 54.3% nationally
  • Median graduation year2003 · the 461 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0003X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

666 NPPES records list hematology & oncology physician (207RH0003X) as their primary taxonomy with a practice address in Illinois: 5.3 per 100,000 residents against 4.2 nationally (50 states and D.C.). Chicago has 231 of them (35%).

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. Pennsylvania784
  2. Florida818
  3. Ohio513
  4. Washington476

States with a similar rate per 100,000

  1. New Hampshire5.4
  2. Connecticut5.5
  3. Maryland5.1
  4. Maine5.5

The largest states

  1. California1,583
  2. New York1,163
  3. Texas922
  4. Florida818
  5. Pennsylvania784

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.