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 110 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. Unknown Wasim, MBBS/MDRoyal Oak, MI 480731134902307
  2. Muhammad Wasiullah, MDAllen Park, MI 481011295758415
  3. Cassondra WassHolland, MI 494231093240103
  4. Avi Wasserman, M.D.Ann Arbor, MI 481031972855534
  5. Margaret Wasvary, MDFarmington Hills, MI 483341194415521
  6. Kevin Watat, DOLansing, MI 489121982343240
  7. Robert Watha, M.D.Saginaw, MI 486021356735286
  8. Donald Watson, D.O.Cheboygan, MI 497211053337535
  9. Peter Watson, M.D.Detroit, MI 482021063580504
  10. Stacey WatsonRichland, MI 490831003926049
  11. Phyllis Watson-Williams, M.D.Iron Mountain, MI 498011982714259
  12. Brook Watts, MDAnn Arbor, MI 481091497775563
  13. Carolyn Watts, MDGrand Rapids, MI 495031437948106
  14. John Way, M.D.Bay City, MI 487081326241258
  15. Arthur Waytes, MD, PHDDexter, MI 481301942847363
  16. Deborah WebbDearborn, MI 481261235142696
  17. Heather Webb, D.O.Grand Blanc, MI 484391093120040
  18. Howard Webb, M.D.Saginaw, MI 486021235212903
  19. Robin Webb, MDZeeland, MI 494641851316236
  20. Kassandra Weber, MDNorthville, MI 481681528629433
  21. Rachel Weberman-Stone, M.D.Ypsilanti, MI 481971629425996
  22. Christopher Webster, D.O.Rochester Hills, MI 483091437442613
  23. Taylor Weckstein, MDTraverse City, MI 496861306739966
  24. Alan Weder, MDAnn Arbor, MI 481051982780904
  25. Deborah WeenerPlymouth, MI 481701760645261
  26. Niluka Weerakoon, M.D.Southfield, MI 480341487967279
  27. Nabil Wehbe, DONovi, MI 483771669452140
  28. Helen Wei, MDRochester Hills, MI 483071629076211
  29. Melissa Wei, MD, MPHAnn Arbor, MI 481091801113451
  30. Timothy Weichert, DO, PHD,FACOITraverse City, MI 496841114986098
  31. David Weidendorf, MDAnn Arbor, MI 481051497088876
  32. Richard Weiermiller, MDRochester Hills, MI 483071689665739
  33. Philip Weighner, M.D.Grand Rapids, MI 495461710945480
  34. Jarrett Weinberger, MDDetroit, MI 482011265642888
  35. Michael Weiner, DOEast Lansing, MI 488231477627545
  36. William Weiner, MDManistee, MI 496601598782443
  37. Leah Weinstein, DORoyal Oak, MI 480731396544714
  38. Gerald Weintraub, MDRoyal Oak, MI 480731710143664
  39. Myra Weiss, M.D.Berkley, MI 480721720002017
  40. David Weissman, MDBeverly Hills, MI 480251366433054
  41. Lance Wells, M.D.Hillsdale, MI 492421790087401
  42. Hope Welter, DOGrand Blanc, MI 484391669318788
  43. Beth Wendt, DODetroit, MI 482361972505501
  44. Abigail Wenzlick, MDGrand Rapids, MI 495251821518317
  45. Lucinda Wenzlick, M.D.Rochester, MI 483071679937502
  46. Mary Werkman, DOLansing, MI 489111073511028
  47. Cameron Werner, MDDetroit, MI 482011124609060
  48. Erik Wert, DOLansing, MI 489111881692739
  49. James WesleyYpsilanti, MI 481971710681879
  50. David Wesorick, MDAnn Arbor, MI 481091558451005

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.