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 119 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. Ryan Stevenson, M.DBoston, MA 021111134378615
  2. Barbara Stewart, M.D.Newton Center, MA 024591679511992
  3. Janet Stiles, M.D.Mashpee, MA 026491619955903
  4. Jay Stiller, M.D.Holden, MA 015201093931081
  5. Kevin Stirling, MDBoston, MA 021181083174478
  6. Kristina Stjernfeldt, M.D.Wellesley, MA 024811467638874
  7. Cristina Stoica, MDLowell, MA 018541346418472
  8. Geren Stone, MDBoston, MA 021181790980225
  9. John Stone, MDBoston, MA 021181205586260
  10. Lisa Stone, M.D.Boston, MA 021181669577045
  11. Samuel Stone, MDBoston, MA 021111750944971
  12. Valerie Stone, MDBoston, MA 021151487645313
  13. Sharon Stotsky, MDWilmington, MA 018871912913039
  14. Somava Stout, M.D.Revere, MA 021511831146612
  15. Caroline Stowell, M.D.Newton, MA 024621013241991
  16. Zachary StrasserBoston, MA 021141083077119
  17. Harmony Stratton, MD, MPHBoston, MA 021111457672792
  18. Lawrence Stratton, MDEverett, MA 021491376527184
  19. Carl Streed, M.D.Boston, MA 021181699044834
  20. Matthew Strickland, M.D.Boston, MA 021181295197762
  21. Logan Striplin, MDSpringfield, MA 011991083289409
  22. Kristen Strniste, DOBoston, MA 021141740846609
  23. David Stroud, MDPlymouth, MA 023601851369094
  24. Ingo Stubbe, MDSomerville, MA 021431164476503
  25. James Stubbert, M.D.Somerset, MA 027261366436644
  26. Rachael Studley, MDBoston, MA 021111114554557
  27. Oleksandr Stupnytskyi, M.D.Lawrence, MA 018411598712739
  28. Aaron Stupple, M.D.Springfield, MA 011071447512595
  29. Andres Su, M.D.Dorchester, MA 021241194164624
  30. Kevin Su, M.D.Boston, MA 021181538521356
  31. Lauren Suarez, MDBoston, MA 021151578140455
  32. Ankita Subedi, M.D.Boston, MA 021111669856159
  33. Kripesh Subedi, MDBoston, MA 021181720582901
  34. Subramony Subramonia Iyer, M.D.Springfield, MA 011041558551952
  35. Hanna Succar, M.D.Brockton, MA 023011275928731
  36. Sourav SudanWorcester, MA 016081174360267
  37. Neelima Sudireddy, MDWebster, MA 015701518936343
  38. Giselle Suero Abreu, MD, PHD, MSCBoston, MA 021141649704180
  39. Alexander Sugerman, MDBoston, MA 021111851095871
  40. Joome Suh, MDBoston, MA 021141801278734
  41. Sunam M Sujanani, MDCambridge, MA 021381629598941
  42. Esilida Sula KarreciWinchester, MA 018901447603279
  43. Abigayle Sullivan, DOBoston, MA 022151053805077
  44. Barbara Sullivan, M.D.Wilbraham, MA 010951982758058
  45. Daniel Sullivan, M.D.Boston, MA 022151659460145
  46. Joanne Sullivan, M.D.Westborough, MA 015811396965315
  47. John Sullivan, M.D.Wilmington, MA 018871225070022
  48. Joseph Sullivan, MDWareham, MA 025711518953710
  49. Mark Sullivan, M.D.Arlington, MA 024741215036603
  50. Nancy Sullivan, C.N.P.Newton Lower Falls, MA 024621679644900

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.