NPPES file of Aug 9, 2026

Internal Medicine Physician in Maryland

3,904 NPPES records list internal medicine physician with a practice address in Maryland, 63 per 100,000 residents, the 5th highest rate of 51. Baltimore and Bethesda have the most; each record links to the provider's NPI and the Maryland license search. Page 52 of 79.

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).

Baltimore has the most, 1,278

  1. Baltimore1,278
  2. Bethesda288
  3. Silver Spring186
  4. Rockville179
  5. Towson121

Internal Medicine Physician records in Maryland

  1. Richard O'Malley, M.D.Towson, MD 212041730259607
  2. Joseph O'Neill, M.D.Baltimore, MD 212871528495629
  3. Patricia O'Neill, MDAnnapolis, MD 214011215163407
  4. Paul O'Rourke, MD, MPHBaltimore, MD 212241811280779
  5. Babajide Obadina, M.D.Greenbelt, MD 207701215910054
  6. Eugene Obah, M.D.Baltimore, MD 212041760429922
  7. Olatokunbo Obayomi, MDSalisbury, MD 218011194772921
  8. Samantha Ober, M.D.Hunt Valley, MD 210311235524034
  9. Margaret Oberman, M.D.Frederick, MD 217021972583581
  10. Jennifer Obiadi, MDLaurel, MD 207071922265529
  11. Isabel Obrusnik, MDSalisbury, MD 218011891432837
  12. Mahesh Ochaney, M.D.Glen Burnie, MD 210611245207539
  13. Priyanka Ochaney Vyas, DOGlen Burnie, MD 210611922636562
  14. Dennis Odie, M.D.Baltimore, MD 212371578593273
  15. Olasupo Odunsi, MDTakoma Park, MD 209121306814033
  16. Uzoamaka Ofodu, MDBaltimore, MD 212241437719341
  17. Lorraine Ofori-Awuah, MDNottingham, MD 212361952334112
  18. Patrick Oguejiofor, M.D.Baltimore, MD 212011881982114
  19. Oluwakemi Ogunsan, M.D.Glen Burnie, MD 210611104054196
  20. Ijeoma Ogunsanya, MDBaltimore, MD 212241659011575
  21. Serena Ogunwole, M.D.Baltimore, MD 212871437578176
  22. Yeong Oh, MDGlen Burnie, MD 210611215953914
  23. Vitalis Ojiegbe, MDBerwyn Heights, MD 207401689684177
  24. Kevin Okeefe, MDAnnapolis, MD 214011841398633
  25. Harry Oken, MDColumbia, MD 210441679566160
  26. Ayoku Oketunji, MDGlen Burnie, MD 210611083697312
  27. Nnenna Okigbo, MDSilver Spring, MD 209041538167028
  28. Godswill Okoji, MDHyattsville, MD 207821518980812
  29. Alphonsus Okoli, M DCollege Park, MD 207401437203619
  30. Sylvester Okonkwo, MDOxon Hill, MD 207451801897582
  31. Kenechukwu OkoroCheverly, MD 207851174004857
  32. Etinosasere OkundayeBel Air, MD 210141598296758
  33. Ikechi Okwara, MDGlenn Dale, MD 207691265472567
  34. Akinwumi Ola, MDBaltimore, MD 212011629107107
  35. Andreea Olaru, M.D.Rosedale, MD 212371962684464
  36. Opeoluwa Olayinka, M.DBaltimore, MD 212241396973202
  37. Rosemary Olivo, M.D.Baltimore, MD 212021932156262
  38. Kolawole Oloniyo, M.D.Cheverly, MD 207851063806131
  39. Ebenezer Oloyede, MD, MPHAnnapolis, MD 214011528697976
  40. Richard Olson, M.D.Rockville, MD 208521346508330
  41. Muhammad Ali Omar, MDSalisbury, MD 218011245784354
  42. Noha Omar, MDCumberland, MD 215021598376402
  43. Olumide Omobo, M.D.Elkton, MD 219211982139119
  44. Deborah Jean Omori, M.D.Bethesda, MD 208891497866032
  45. Bolaji Onabajo, MDGlen Burnie, MD 210611295718526
  46. Joy Onaghise, MDUpper Marlboro, MD 207741679958565
  47. Chinwuba Onejeme, M.D.Baltimore, MD 212281790718989
  48. Adaku Onukogu, MDSilver Spring, MD 209101427265958
  49. Chike Onwuka, M.D.Clinton, MD 207351013065267
  50. Chima Onyegbule, MBBSLargo, MD 207741407596364

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

Maryland ranks 5 of 51 per resident

  1. Massachusetts97
  2. Rhode Island94
  3. Connecticut73
  4. Maryland63
  5. Hawaii63
  6. New York62
  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.

76.8% 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. Maryland76.8%
  2. United States78.7%

Internal Medicine Physician records in Maryland, measured

  • In a Medicare file2,998 of 3,904 · 76.8% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file2,446 · 62.7% here, 61.4% nationally
  • Not updated in five years or more2,313 · 59.2% here, 55.4% nationally
  • Median graduation year2003 · the 2,445 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

3,904 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Maryland: 63 per 100,000 residents against 44 nationally (50 states and D.C.). Baltimore has 1,278 of them (33%).

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. Georgia3,911
  2. North Carolina4,056
  3. Virginia3,599
  4. New Jersey4,632

States with a similar rate per 100,000

  1. Hawaii62.9
  2. New York61.7
  3. Delaware58.1
  4. Illinois57.7

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.