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 55 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. Raafe Islam, MDWorcester, MA 016051629760715
  2. Diana Israeli, D.O.Northampton, MA 010601245541929
  3. Karen Isselbacher, MDWellesley, MA 024811508822867
  4. Nawfal Istfan, M.D.Boston, MA 021181740248301
  5. Mark Itzkowitz, M.D.Burlington, MA 018051184663270
  6. Adrian Iusco, M.D.Westfield, MA 010851316386360
  7. David Ives, MDLexington, MA 024201457399453
  8. Christiana Iyasere, MDBoston, MA 021141649253386
  9. Akinwale Iyeku, MB.CH.B., MRCP.Boston, MA 021141215624762
  10. Smitha Iyer, M.D.Springfield, MA 011071609072958
  11. Urvya Iyer, MD, MPHBoston, MA 021141043940554
  12. Shagufta Jabeen, M.D.Marlborough, MA 017521962790725
  13. Alan Jackson, MDNorthbridge, MA 015341871557520
  14. Angela Jackson, MDBoston, MA 021181154389310
  15. Jackcy Jacob, MDSpringfield, MA 011091427267210
  16. Joby JacobBoston, MA 022151073045456
  17. Mithun Jacob, MDSpringfield, MA 011071912519489
  18. Carla Jacobs, DOSpringfield, MA 011071356703904
  19. Mark Jacobs, MDNeedham, MA 024941124013883
  20. Renee Jacobs, M.D.Needham, MA 024921396784484
  21. Simon Jacobs, MDFalmouth, MA 025401609836162
  22. Claire Jacobus, M.D.Winchester, MA 018901932272176
  23. Samah Jafari, M.D.Amherst, MA 010021972757946
  24. Michael Jaff, DOBoston, MA 021141750372884
  25. Emily JaffeBoston, MA 021111699569095
  26. Udaya Jagadeesan, M.D.Longmeadow, MA 011061790743755
  27. Deepa Jagadeesh, M.D.Worcester, MA 016051720131766
  28. Eugene Jagella, M.D.Milford, MA 017571992794549
  29. Arpit JainBoston, MA 021351104559632
  30. Chandrika Jain, M.D.Berlin, MA 015031720040256
  31. Hanish Jain, MDGardner, MA 014401518443019
  32. Nina Jain, MDBoston, MA 021151497284160
  33. Nupur JainBoston, MA 021111306640354
  34. Pinky Jain, M.D.Woburn, MA 018011417963182
  35. Preeti Jain, MDShrewsbury, MA 015451801860192
  36. Sandeep Jain, M.D.Concord, MA 017421417915562
  37. Sunny Jain, M.D.Leominster, MA 014531962780411
  38. Tara JainBoston, MA 021151518595578
  39. John Jainchill, M.D.Jamaica Plain, MA 021301831118272
  40. Kristina JakobsonBoston, MA 021111649967472
  41. Marla Jalbut, MDBoston, MA 021141265098644
  42. Mohammed Jaleel, M.D.Winchester, MA 018901568425346
  43. Jumana Jaloudi, D.O.Springfield, MA 011041265813414
  44. Humaira Jami, M.D.Salem, MA 019701336403195
  45. Nawshin Jamil, DOLowell, MA 018541629712302
  46. Taimoor Jamil, M.D.Boston, MA 021151588348601
  47. Kevin Jamouss, MDSpringfield, MA 011991447952379
  48. Fatima Jamshed, MDSpringfield, MA 011071700536331
  49. Rosemary Janas, FNPTewksbury, MA 018761104978980
  50. Sarah Jancek, D.O.Dartmouth, MA 027471689815102

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.