NPPES file of Aug 9, 2026

Gastroenterology Physician in Maryland

505 NPPES records list gastroenterology physician with a practice address in Maryland, 8.2 per 100,000 residents, the 6th highest rate of 51. Baltimore and Rockville have the most; each record links to the provider's NPI and the Maryland license search. Page 7 of 11.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RG0100X · 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, 131

  1. Baltimore131
  2. Rockville38
  3. Bethesda35
  4. Columbia25
  5. Frederick24

Gastroenterology Physician records in Maryland

  1. Jonathan McCone, M.D.Oxon Hill, MD 207451578782553
  2. Grice McMullan, M.D.Laurel, MD 207071033409362
  3. John Meadows, M.D.Salisbury, MD 218011740229814
  4. Amit Mehta, M.DBaltimore, MD 212871891104485
  5. Ripple Mehta, M.D.Leonardtown, MD 206501053743823
  6. Alireza Meighani, M.DClinton, MD 207351750709333
  7. Joanna Melia, M.D.Baltimore, MD 212871578768727
  8. Stephen Meltzer, M.D.Baltimore, MD 212871679511430
  9. Esteban Mezey, M.D.Baltimore, MD 212871548219280
  10. William Miller, MDFrederick, MD 217011649209248
  11. Lawrence Mills, MDBaltimore, MD 212391023197902
  12. Lornette Mills, MDWaldorf, MD 206021689673741
  13. Akaash Mittal, MDWaldorf, MD 206031174151054
  14. Sachin MohanOxon Hill, MD 207451114269461
  15. Ghulam Mohi-Ud-Din, M.D.Riverdale, MD 207371821142514
  16. Raja Mohi-Ud-Din, M.D.Greenbelt, MD 207701992887335
  17. Shaffer Mok, M.D.Columbia, MD 210451275878787
  18. Michael Moran, MDEaston, MD 216011063442515
  19. Radman Mostaghim, M.D.Greenbelt, MD 207701720022023
  20. Ghita Moussaide, M.D.Catonsville, MD 212281649535667
  21. Andrew Mowery, DOFrederick, MD 217041104084896
  22. Weitong Mu, MD, PHDAbingdon, MD 210091194786624
  23. Samuel Muench, M.D.Bethesda, MD 208171164871562
  24. Gerard Mullin, M.D.Baltimore, MD 212871891746996
  25. Joseph Murphy, M.D.Waldorf, MD 206021174521173
  26. Megan Murphy, MDBaltimore, MD 212871609262559
  27. Robert Musselman, MDSilver Spring, MD 209011376640888
  28. Seetaramayya Nagula, M.D.Waldorf, MD 206021114926284
  29. Ashok Narang, MDBel Air, MD 210141407818909
  30. Vijay Narayen, M.D.Columbia, MD 210441538168422
  31. Eiad Nasser, MDAbingdon, MD 210091922230002
  32. Anand Nath, MDLeonardtown, MD 206501225479702
  33. John Newman, M.D.Annapolis, MD 214011184656274
  34. Saowanee Ngamruengphong, MDBaltimore, MD 212241285898023
  35. Geoffrey Nguyen, M.D.Baltimore, MD 212871235296641
  36. Nhu-An Nguyen, D.O.Jb Andrews, MD 207621922446988
  37. Ashish NimgaonkarBaltimore, MD 212871861675407
  38. Mark Noar, M.D.Towson, MD 212041669431664
  39. James Novick, M.D.Baltimore, MD 212041184664807
  40. Zin Nwe, M.D.Baltimore, MD 212391235367640
  41. Anne Marie O'Broin Lennon, MD PHDBaltimore, MD 212871881831345
  42. Ibironke Oduyebo, M.D.Rockville, MD 208501164576633
  43. Sun Jung OhBaltimore, MD 212871356796890
  44. Olanma Okoji, M.D.Rockville, MD 208501457678492
  45. Christopher Olenec, MDAnnapolis, MD 214011891968046
  46. Raena Olsen, D.O.Silver Spring, MD 209061619993086
  47. Aminat Oluyemi, MDWestminster, MD 211571023211646
  48. Kenolisa Onwueme, M.D., PH.D.Baltimore, MD 212081336283720
  49. Alyssa Parian, MDBaltimore, MD 212241154580033
  50. Peter Park, MDAbingdon, MD 210091689636078

Source: CMS NPPES, primary taxonomy 207RG0100X: records by practice city and the list of records, file of Aug 9, 2026.

Maryland ranks 6 of 51 per resident

  1. Connecticut9.3
  2. New York9.2
  3. Rhode Island8.8
  4. Maryland8.2
  5. Pennsylvania8.1
  6. Minnesota8.0
  7. 50 states and D.C.6.2

Source: CMS NPPES, primary taxonomy 207RG0100X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

80.6% of these records appear in a Medicare file, against 84.4% 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. Maryland80.6%
  2. United States84.4%

Gastroenterology Physician records in Maryland, measured

  • In a Medicare file407 of 505 · 80.6% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file344 · 68.1% here, 73.7% nationally
  • Not updated in five years or more310 · 61.4% here, 55.6% nationally
  • Median graduation year2002 · the 344 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RG0100X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

505 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in Maryland: 8.2 per 100,000 residents against 6.2 nationally (50 states and D.C.). Baltimore has 131 of them (26%).

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. Georgia530
  2. Washington533
  3. Virginia536
  4. Michigan550

States with a similar rate per 100,000

  1. Pennsylvania8.1
  2. Minnesota8.0
  3. New Jersey7.9
  4. New Hampshire7.8

The largest states

  1. California2,140
  2. New York1,797
  3. Florida1,513
  4. Texas1,478
  5. Pennsylvania1,049

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.