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 8 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. Ramona Lim, M.D.Boston, MA 021151285608240
  2. Eric Lin, MDBoston, MA 021141104355676
  3. Ming Lin, MDBurlington, MA 018051043404593
  4. Frank Linn, M.D.Concord, MA 017421639250327
  5. Elyse Linson, M.DFlorence, MA 010621780125054
  6. Anne Liu, M.D.Boston, MA 021151962848416
  7. Rebecca Liu, MDBoston, MA 021141063972644
  8. Maria Livshin, M.D.Cambridge, MA 021391194887505
  9. Wai-Kit Lo, MDBoston, MA 021151043347404
  10. Paul Lochhead, MBCHBBoston, MA 021141396194411
  11. Nayna Lodhia, M.D.Boston, MA 021151205240314
  12. Matthew Loewenstein, MDCambridge, MA 022381215904982
  13. Michelle Long, M.D.Boston, MA 021181194952663
  14. Maria LonshteynBeverly, MA 019151720247653
  15. Gary Lopes, M.D.Boston, MA 022151285765149
  16. Robert Lowe, M.D.Boston, MA 021181073590774
  17. Jay Luther, M.D.Boston, MA 021141871793786
  18. Francis Macmillan, M.D.Haverhill, MA 018301053316620
  19. David Maddock, M.D.Fall River, MA 027211376540443
  20. Samantha MagierBurlington, MA 018051164088332
  21. Syed Mahmood, MDBurlington, MA 018051013186535
  22. Mohamed Mahmoud, M.D.Worcester, MA 016551962701326
  23. Irena Maier, M.D.Boston, MA 022151235161779
  24. Frederick Makrauer, MDBoston, MA 021151174580484
  25. Ayaz Malik, M.D.Gardner, MA 014401154320984
  26. Frank Malkin, MDNatick, MA 017601467521740
  27. Jose Marcal, M.D.Stoneham, MA 021801538116223
  28. Bruce Marcel, MDPlymouth, MA 023601770540346
  29. Franklin Marinelli, MDLowell, MA 018511780676155
  30. Christopher Marshall, M.D.Worcester, MA 016551942306261
  31. Fernando Martinez, M.D.South Weymouth, MA 021901255598165
  32. Tiago Martins, DOPalmer, MA 010691295295095
  33. Neil Marya, M.D.Worcester, MA 016551790046092
  34. Hiroshi Mashimo, M.D., PH.D.W Roxbury, MA 021321073616348
  35. Joel Mason, MDBoston, MA 021111164539292
  36. Daniel Matloff, MDBoston, MA 021301114963980
  37. Thomas McMahon, MDWareham, MA 025711619048030
  38. Raaj Mehta, MDBoston, MA 021141467809061
  39. Gabriel Melki, MDHolyoke, MA 010401194247213
  40. Jose Mella, M.D.Boston, MA 022151487908141
  41. Frank Meyers, MDFlorence, MA 010621740250190
  42. John Miller, M.D.Springfield, MA 011071750725040
  43. Norman Miller, MDHavenhill, MA 018301235136367
  44. Samuel Miller, MDBoston, MA 022151619407855
  45. Scott Minchenberg, MD, PHDBoston, MA 022151083272355
  46. Melissa Minor, M.D.Salem, MA 019701972533768
  47. Daniel Mishkin, M.D.Weymouth, MA 021891801822564
  48. Vanessa Mitsialis, MDBoston, MA 021151184062705
  49. Emilie Mitten, M.D.Boston, MA 021151639528797
  50. Roger Mitty, MDBrighton, MA 021351902894025

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.