NPPES file of Aug 9, 2026

Gastroenterology Physician in Massachusetts

686 NPPES records list gastroenterology physician with a practice address in Massachusetts, 9.8 per 100,000 residents, the 2nd highest rate of 51. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search. Page 9 of 14.

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).

Boston has the most, 280

  1. Boston280
  2. Worcester50
  3. Burlington31
  4. Springfield18
  5. Cambridge15

Gastroenterology Physician records in Massachusetts

  1. Andres Mogollon, M.D.Framingham, MA 017021659595429
  2. Ruqayah Mohammed, PA-CFramingham, MA 017021982449005
  3. Arpan Mohanty, MDBoston, MA 021141306166202
  4. Phani Molakatalla, M.D.Gardner, MA 014401861620007
  5. James Moore, MDSouth Weymouth, MA 021901154301422
  6. Thomas Moore, M.D.Boston, MA 021181386621092
  7. Brian Moquin, M.D.Milford, MA 017571922192251
  8. Torre Morgan, MDCambridge, MA 021381851382360
  9. Alan Moss, MDBoston, MA 021181639378789
  10. Kristen Moulton, DOWorcester, MA 016551821559758
  11. Srikant Muddana, MDWorcester, MA 016041629125448
  12. Mayssan MuftahBoston, MA 021151457882078
  13. Robert Muggia, M.D.Stoneham, MA 021801982662813
  14. Rupa Mukherjee, MDBoston, MA 022151598979437
  15. Alan Mullen, MD, PHDWorcester, MA 016551972639649
  16. Kevin Murphy, MDWareham, MA 025711922066489
  17. Lawrence Murphy, M.D.Beverly, MA 019151902126238
  18. Muthoka Mutinga, M.D.Boston, MA 021301609823293
  19. Xi Na, M.D., PH.D.Stoneham, MA 021801700049269
  20. Alexandre Nader, M.D.Hyannis, MA 026011518914100
  21. Albert Namias, MDSalem, MA 019701245231513
  22. Joshua Namias, M.D.Salem, MA 019701790900140
  23. Tarek Nammour, MDBoston, MA 021151831822329
  24. Ram Narasimhan, M.D.Peabody, MA 019601952460206
  25. Jonathan Nass, M.D.South Weymouth, MA 021901558587998
  26. Navine Nasser-Ghodsi, M.D.Worcester, MA 016551457730376
  27. Barbara Nath, MDBoston, MA 021141427048503
  28. Nikola Natov, MDBurlington, MA 018051952690695
  29. Jennifer Nayor, M.D.Boston, MA 021151790912731
  30. Judy NeeBoston, MA 022151295900603
  31. Michael Newman, M.D.Beverly, MA 019151487704276
  32. Deanna Nguyen, MDBoston, MA 021141184603185
  33. Long Nguyen, M.D., M.S.Boston, MA 021141538402656
  34. Peiyun Ni, MDBoston, MA 021141386270304
  35. Drew Niccolini, M.D.Lawrence, MA 018431639174410
  36. Sebastian NiezenBoston, MA 022151265162291
  37. Norman Nishioka, MDBoston, MA 021141174513600
  38. Sahar NissimBoston, MA 021151396944401
  39. Mark Nitzberg, M.D.Methuen, MA 018441881652758
  40. Alan Noll, MDBurlington, MA 018051962933663
  41. Ansu Noronha, M.D.Boston, MA 021181568557775
  42. Mary Norris, MDHolyoke, MA 010401881694362
  43. John Paul Nsubuga, MDMedford, MA 021551164089777
  44. David Nunes, MDBoston, MA 021181619925518
  45. John Paul Anthony O'Connor, M.D., M.R.C.P.I.Boston, MA 022151881025427
  46. Patrick O'Dea, MDNewburyport, MA 019501427051366
  47. Michael O'Donnell, M.D.Newton, MA 024621609223676
  48. Kelly Ocallahan, M.D.Worcester, MA 016081427056795
  49. Lori Beth Olans, MDBoston, MA 021111992814255
  50. Michael Jonathan Older, M.D.Ayer, MA 014321194757625

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

Massachusetts ranks 2 of 51 per resident

  1. District of Columbia13.1
  2. Massachusetts9.8
  3. Connecticut9.3
  4. New York9.2
  5. 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.

79.7% 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. Massachusetts79.7%
  2. United States84.4%

Gastroenterology Physician records in Massachusetts, measured

  • In a Medicare file547 of 686 · 79.7% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file491 · 71.6% here, 73.7% nationally
  • Not updated in five years or more450 · 65.6% here, 55.6% nationally
  • Median graduation year2004 · the 491 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

686 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in Massachusetts: 9.8 per 100,000 residents against 6.2 nationally (50 states and D.C.). Boston has 280 of them (41%).

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. North Carolina681
  2. New Jersey735
  3. Ohio741
  4. Michigan550

States with a similar rate per 100,000

  1. Connecticut9.3
  2. New York9.2
  3. Rhode Island8.8
  4. Maryland8.2

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.