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 114 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. Niloufar Shoushtari, MDLongmeadow, MA 011061740227420
  2. Michael Shrager, MDNewton, MA 024621508483504
  3. William Shrank, MDBoston, MA 021151164409629
  4. Mahesh ShresthaWorcester, MA 016081215345269
  5. Shreya Shrestha, MDBoston, MA 021141104275221
  6. Sarah Shreter, M.D.Swansea, MA 027771235181231
  7. Shyla Shrinath, MDBoston, MA 021161568435576
  8. Shawn Shroff, M.D.Quincy, MA 021691306105283
  9. Khuloud Shukha, M.DCambridge, MA 021381407168925
  10. Manjul Shukla, MDWorcester, MA 016061467402057
  11. Richard Shuman, M.D.Chicopee, MA 010201710940481
  12. Sharon ShungConcord, MA 017421326465279
  13. Arthur Shushan, M.D.Cambridge, MA 021381164410791
  14. Matthew Shuster, M.D.Chestnut Hill, MA 024671164468807
  15. Nida Shuttari, MDNorth Falmouth, MA 025561720649882
  16. Viktoria Shvets, M.D.Newburyport, MA 019501164422259
  17. Chi Chang Siao, MDMilton, MA 021861083880538
  18. Andrew Siber, M.D.Uxbridge, MA 015691083787220
  19. Roberto Sica, MDNew Bedford, MA 027401316133648
  20. Jean Siddall-Bensson, M.D.Attleboro, MA 027031730100629
  21. Arshia Siddiqui, M.D., MPHChelsea, MA 021501366490591
  22. Bilal Siddiqui, M.D.Boston, MA 022151699155408
  23. Mohammad Siddiqui, MDHolliston, MA 017461235190315
  24. James Sidel, M.D.Wellesley, MA 024811053458398
  25. Kumara Sidhartha, MDSouth Yarmouth, MA 026641629091608
  26. Samy Sidhom, M.D., M.P.H.Boston, MA 022151043474208
  27. Surinderpal Sidhu, MDMilford, MA 017571528023967
  28. Arthur Siegel, MDBelmont, MA 024781881675601
  29. Jennifer Siegel, M.D.Boston, MA 021141255565594
  30. Jerome Siegel, MDWestborough, MA 015811710976709
  31. Lydia Siegel, MD, MPHJamaica Plain, MA 021301003892001
  32. David Siegenberg, M.D.Reading, MA 018671578502563
  33. Peter Siersma, MDWilliamsburg, MA 010961730148149
  34. Shwu Siew, M.D.Worcester, MA 016051427178110
  35. Joshua Siewert, MD,MBABoston, MA 021141003346255
  36. Carl Sigsbee, MDHyannis, MA 026011508818865
  37. Daniel SikaviBoston, MA 021141174150080
  38. Andrew Silapaswan, MD, MPHBoston, MA 022151497285522
  39. Julie Silberstein, MDSpringfield, MA 011071578587499
  40. Karen Siller, MDJamaica Plain, MA 021301164413779
  41. Jane Sillman, M.D.Boston, MA 021151245241900
  42. Catherine Silva, M.D.East Boston, MA 021281740268234
  43. Dilma Silva, MDDartmouth, MA 027471487641502
  44. Jane Silva, M.D.North Waltham, MA 024521003853797
  45. Amy Silver, M.D.Boston, MA 022151659563997
  46. Michelle Silver, MDBoston, MA 022151326509266
  47. Marianna Silverman, DOBurlington, MA 018031720399702
  48. Michael Silverman, M.D.Marblehead, MA 019451811958002
  49. Martin Silverstein, M.D.Boston, MA 021091124215298
  50. Agus Simahendra, M.D.Worcester, MA 016081841642220

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.