NPPES file of Aug 9, 2026

Internal Medicine Physician in Michigan

5,735 NPPES records list internal medicine physician with a practice address in Michigan, 57 per 100,000 residents, the 10th highest rate of 51. Detroit and Ann Arbor have the most; each record links to the provider's NPI and the Michigan license search. Page 77 of 115.

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).

Detroit has the most, 617

  1. Detroit617
  2. Ann Arbor479
  3. Grand Rapids451
  4. Royal Oak218
  5. Southfield200

Internal Medicine Physician records in Michigan

  1. Thomas O'Callaghan, MDAnn Arbor, MI 481091265926331
  2. Anne O'Connor, MDGrand Blanc, MI 484391114774049
  3. Audrey O'Connor, DOLansing, MI 489121063932440
  4. Thomas O'Connor, MDAnn Arbor, MI 481031619066859
  5. Kimberly O'Donnell, MDAnn Arbor, MI 481091962591107
  6. Sherrell O'Donnell, D.O.Saint Joseph, MI 490851699771725
  7. Marie Claire O'Dwyer, MB BCH BAOAnn Arbor, MI 481081932619798
  8. Kathleen O'Hare, M.D.Grand Rapids, MI 495051447274261
  9. Sean O'Keefe, M.D.Ann Arbor, MI 481091811526759
  10. Reginald O'Neal, D.O.Rochester Hills, MI 483071669401493
  11. Jessica O'Neil, D.O.Grand Rapids, MI 495031801182605
  12. Lindsey O'Neil, DODetroit, MI 482351871027045
  13. Lisa O'Neil, D.O.Westland, MI 481851437252749
  14. Kenneth O'Neill, MDStevensville, MI 491271447266341
  15. Nicole O'Neill, MDWyandotte, MI 481921619176385
  16. Kevin O'Reilly, DOAnn Arbor, MI 481091952693079
  17. David Oakley, MDTraverse City, MI 496841578523700
  18. Erica Oakley, D.O.Traverse City, MI 496841104022334
  19. Obi Ob-Nwankwo, M.DSaginaw, MI 486021184917221
  20. Waleed Obaid, M.DDetroit, MI 482351003187295
  21. Abdllqwy Obeid, MDDetroit, MI 482121386132728
  22. Mohammed Obeid, D.O.Dearborn, MI 481261457383911
  23. Zafer Obeid, M.DDearborn, MI 481261255499257
  24. Islam Obeidat, MDFlint, MI 485321326611427
  25. Harold Obiakor, M.D.Detroit, MI 482011598157794
  26. Mark Obrien, MDBenton Harbor, MI 490221841221348
  27. Mary Ocallaghan, DOLudington, MI 494311558369884
  28. Ken Ochiai, M.D.Saint Joseph, MI 490851629455050
  29. Lisa Ochoa, DOFlint, MI 485321831541002
  30. Robert OcomenGrand Rapids, MI 495031689306094
  31. Jashan Octain, M.D.Ann Arbor, MI 481091356636997
  32. Stefan Odabasic, MDYpsilanti, MI 481971437716479
  33. Valentina OdeeshoGrand Blanc, MI 484391033049317
  34. Wafa Odeh, MDSouthgate, MI 481951780657676
  35. Fadi Odish, MDRoyal Oak, MI 480731659801983
  36. Ebele Odonwodo, MDGrand Rapids, MI 495031336331891
  37. Ekwevugbe Ogbon, MDFlint, MI 485031407434343
  38. Francis Ogini, MDYpsilanti, MI 481971952530263
  39. Ayomide Ojo, MDPontiac, MI 483411407599202
  40. Chrystal Ojo, AGPCNP-BCGrand Blanc, MI 484391154859007
  41. Bashar Okka, MDClarkston, MI 483461942210299
  42. Ayowale Oladeji, MDGrand Rapids, MI 495031780104364
  43. Olawale Olanisa, MDGrand Rapids, MI 495031538711015
  44. Marian Oleszkowicz, MDGrand Rapids, MI 495461487600888
  45. Lindsay Oliveira, MDN Muskegon, MI 494451942427935
  46. Mitchell Oliver, DOGrosse Pointe, MI 482301710672548
  47. Sharon Oliver, M.D.Detroit, MI 482031619044740
  48. Melissa Olken, MD, PHDAnn Arbor, MI 481051265540611
  49. Temitayo Olojo, MDWyoming, MI 495191427686435
  50. Adesuwa Olomu, M.DEast Lansing, MI 488231316041668

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

Michigan ranks 10 of 51 per resident

  1. New York62
  2. Delaware58
  3. Illinois58
  4. Michigan57
  5. Pennsylvania56
  6. Vermont50
  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.

79.4% 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. Michigan79.4%
  2. United States78.7%

Internal Medicine Physician records in Michigan, measured

  • In a Medicare file4,555 of 5,735 · 79.4% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file3,566 · 62.2% here, 61.4% nationally
  • Not updated in five years or more3,119 · 54.4% here, 55.4% nationally
  • Median graduation year2006 · the 3,564 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

5,735 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Michigan: 57 per 100,000 residents against 44 nationally (50 states and D.C.). Detroit has 617 of them (11%).

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. Ohio5,277
  2. Massachusetts6,825
  3. New Jersey4,632
  4. Illinois7,238

States with a similar rate per 100,000

  1. Pennsylvania56.3
  2. Delaware58.1
  3. New York61.7
  4. Hawaii62.9

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.