NPPES file of Aug 9, 2026

Internal Medicine Physician in Massachusetts

6,825 NPPES records list internal medicine physician with a practice address in Massachusetts, 97 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 45 of 137.

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).

Boston has the most, 2,320

  1. Boston2,320
  2. Worcester448
  3. Cambridge300
  4. Springfield282
  5. Burlington144

Internal Medicine Physician records in Massachusetts

  1. Anirudh Goyal, MDBoston, MA 022151487270997
  2. Piotr Grabias, M.D.Webster, MA 015701508847419
  3. Tara Grabowsky, M.D.Newton, MA 024621043319809
  4. David Grace, M.D.Plymouth, MA 023601619043304
  5. Kelly GrahamBoston, MA 022151144488925
  6. Emily Granger, MDNewton, MA 024621144072216
  7. Jacinta Grant, M.D.Saugus, MA 019061285827022
  8. Richard Grant, MD MPHRevere, MA 021511154392561
  9. Gonzalo Graupera, MDJamaica Plain, MA 021301982640819
  10. Agnes Graves, M.D.Cambridge, MA 021391932160934
  11. Marianne Gray, MDCambridge, MA 021381770718322
  12. Wendy Gray, M.D.Framingham, MA 017011003026238
  13. Friederike Grebeldinger, M.D.Pittsfield, MA 012011184064677
  14. Alexander Green, MD MPHBoston, MA 021141548251853
  15. Allan Green, MD, PHDCambridge, MA 021381427120344
  16. Brian Green, M.D.Boston, MA 021301447206636
  17. Eric Green, MD, MSCBurlington, MA 018051235214008
  18. Howard Green, M.D.Concord, MA 017421912040478
  19. James Robert Green, M.D.Foxboro, MA 020351497792196
  20. Stephanie Green, M.D.Marblehead, MA 019451942383310
  21. Tracy Green, MDGreenfield, MA 013011659350742
  22. Wesley Green, MDTurners Falls, MA 013761013074285
  23. Maurice Greenbaum, MDSalem, MA 019701508812413
  24. Jeffrey Greenberg, M.D.Watertown, MA 024721134153885
  25. Robert Greenberg, MDBrockton, MA 023011548245038
  26. Alyssa Greenhouse, MD, MPHBoston, MA 021141134605942
  27. Harold Greenspan, M.D.Chestnut Hill, MA 024671457326076
  28. Jeffrey Greenwald, M.D.Boston, MA 021141326023466
  29. Marc Greenwald, MDBrockton, MA 023021700850807
  30. Beverly Greenwold, M.D.West Roxbury, MA 021321568568657
  31. Matthew GreenwoodWorcester, MA 016051649730862
  32. Michael Gregory, MDBrookline, MA 024461265457675
  33. Oliver Gregory, M.D.Lynn, MA 019041154768281
  34. Paul Greiner, MDMansfield, MA 020481861466997
  35. Anna Greka, M.D.Boston, MA 021141679672596
  36. Samuel Gretz, MDBoston, MA 021111134706088
  37. Himmat Grewal, M.B.,B.S, M.DWorcester, MA 016081790198489
  38. Katharine Griffey, M.D.Worcester, MA 016051912183831
  39. Molly Griffin, MDBoston, MA 022151659949154
  40. Craig Grimes, MDLynn, MA 019041245286012
  41. Benjamin Grin, MD, MPHBoston, MA 021151922489145
  42. Peter Grinspoon, M.D.Chelsea, MA 021501952560310
  43. Anna Grishkevich, MDPittsfield, MA 012011679093975
  44. Elysia Griswold, MDPeabody, MA 019601396797221
  45. Jared Grochowsky, M.D.Boston, MA 022151194046748
  46. Conor Grogan, MDWorcester, MA 016051093211054
  47. Donna Grogan, M.D.Marlboro, MA 017521578688388
  48. Douglas Gronda, MDHolliston, MA 017461962463109
  49. Tiffany Groover, MDWorcester, MA 016101891091310
  50. Gary Grosart, MDFairhaven, MA 027191689661704

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

Massachusetts ranks 2 of 51 per resident

  1. District of Columbia133
  2. Massachusetts97
  3. Rhode Island94
  4. Connecticut73
  5. 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.

74.5% 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. Massachusetts74.5%
  2. United States78.7%

Internal Medicine Physician records in Massachusetts, measured

  • In a Medicare file5,088 of 6,825 · 74.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file4,103 · 60.1% here, 61.4% nationally
  • Not updated in five years or more4,346 · 63.7% here, 55.4% nationally
  • Median graduation year2004 · the 4,103 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

6,825 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Massachusetts: 97 per 100,000 residents against 44 nationally (50 states and D.C.). Boston has 2,320 of them (34%).

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. Illinois7,238
  2. Pennsylvania7,300
  3. Michigan5,735
  4. Ohio5,277

States with a similar rate per 100,000

  1. Rhode Island94.3
  2. Connecticut72.5
  3. Maryland63.2
  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.