NPPES file of Aug 9, 2026

Anesthesiology Physician in Illinois

2,575 NPPES records list anesthesiology physician with a practice address in Illinois, 21 per 100,000 residents, the 11th highest rate of 51. Chicago and Maywood have the most; each record links to the provider's NPI and the Illinois license search. Page 34 of 52.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207L00000X · 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, 1,113

  1. Chicago1,113
  2. Maywood153
  3. Evanston75
  4. Park Ridge71
  5. Arlington Heights68

Anesthesiology Physician records in Illinois

  1. Christopher OconnorChicago, IL 606121164442505
  2. Simisola Odusanya, MDChicago, IL 606121962146506
  3. Laura Odwyer, MDChicago, IL 606571053251561
  4. Ihuoma Ofoma, M.D.Chicago, IL 606121740599448
  5. Mina Oftadeh, D.O.Maywood, IL 601531164748505
  6. Chiebonam Oguejiofor, M.D.Hinsdale, IL 605211548593528
  7. Sei Oh, MDNorthbrook, IL 600621619248168
  8. Ikechukwu Okafo, MDChicago, IL 606251295264182
  9. Dionne OkaforMattoon, IL 619381043576903
  10. Emenike Okafor, MDMaywood, IL 601531609372218
  11. Chukwudi Okpala, M.D.Chicago, IL 606311437449980
  12. Gary Oldenburg, M.D.Loves Park, IL 611111376588657
  13. Michael Oleyar, D.O.Chicago, IL 606571386969848
  14. Blasco Oliveira, M.D.Chicago, IL 606121336260215
  15. Milagros Oliveira, M.D.Oak Brook, IL 605231356443063
  16. Miya Oliver, MDArlington Heights, IL 600051841937760
  17. John Olsen, M.D.Great Lakes, IL 600881154380053
  18. Kurt Olsen, M.D.Chicago, IL 606111356373187
  19. Jeffrey Olson, MDChicago, IL 606311447267877
  20. Jungmin On, MDArlington Heights, IL 600051215513619
  21. Charmaine Ong, MDChicago, IL 606121871351114
  22. Jessica OnwudiweChicago, IL 606371538749445
  23. Vesselin Oreshkov, M.D.Springfield, IL 627021487642534
  24. Obinna Orji, MDDecatur, IL 625211588920516
  25. Deofil Orteza, M.D.Princeton, IL 613561699790287
  26. Juan Ortiz-Vazquez, MDMaywood, IL 601531962152231
  27. Daniela Orza, MDChicago, IL 606121861473225
  28. Phillip OsakMaywood, IL 601531053123695
  29. Rodney Osborn, MDPeoria, IL 616151114916335
  30. Ryan Osborne, MDElgin, IL 601231518543578
  31. Abdelrahman OsmanChicago, IL 606111992643191
  32. Dale Ostrander, MDDecatur, IL 625261417935800
  33. Randall Ostroff, MDBerwyn, IL 604021366523219
  34. Domingo Osunero, M.D.Chicago, IL 606081477553311
  35. Sarah OswaldChicago, IL 606311033316237
  36. Omar Othman, M.D.Chicago, IL 606171629262571
  37. Kendra Outler, MDChicago, IL 606371629191747
  38. Steven OutlyChicago, IL 606121962422055
  39. Margaret Overton, MDPark Ridge, IL 600681376632497
  40. Erik Ovrom, BAChicago, IL 606371447952015
  41. Audrey Oware, MDNaperville, IL 605401851553408
  42. Miroslaw Owczarek, M.D.Chicago, IL 606311871609859
  43. Ayman Oweisi, MDChicago, IL 606571467202531
  44. Vivian Oyegunle, MDChicago, IL 606121194569798
  45. Anish OzaChicago, IL 606371518050046
  46. Vishal Oza, M.D.Arlington Heights, IL 600051023264546
  47. David Ozinga, M.D.Palos Heights, IL 604631700856705
  48. John Ozinga, DOPalos Heights, IL 604631497383707
  49. Shahaad PaceMaywood, IL 601531235833641
  50. Ernesto Padillo, MDChicago, IL 606221245341536

Source: CMS NPPES, primary taxonomy 207L00000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 11 of 51 per resident

  1. New Hampshire22
  2. Indiana21
  3. Vermont21
  4. Illinois21
  5. Colorado20
  6. Maryland20
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 207L00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

71.2% of these records appear in a Medicare file, against 73.7% 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. Illinois71.2%
  2. United States73.7%

Anesthesiology Physician records in Illinois, measured

  • In a Medicare file1,833 of 2,575 · 71.2% here, 73.7% nationally
  • In the CMS Doctors and Clinicians file1,608 · 62.4% here, 67.2% nationally
  • Not updated in five years or more1,225 · 47.6% here, 57.8% nationally
  • Median graduation year2006 · the 1,608 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207L00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,575 NPPES records list anesthesiology physician (207L00000X) as their primary taxonomy with a practice address in Illinois: 21 per 100,000 residents against 18 nationally (50 states and D.C.). Chicago has 1,113 of them (43%).

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. Pennsylvania2,481
  2. Massachusetts2,089
  3. Ohio2,068
  4. Florida3,375

States with a similar rate per 100,000

  1. Colorado20.5
  2. Maryland20.3
  3. Vermont20.9
  4. Maine20.1

The largest states

  1. California7,571
  2. New York5,062
  3. Texas4,635
  4. Florida3,375
  5. Pennsylvania2,481

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.