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 117 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. Roy Soberman, M.D.Boston, MA 021141649463498
  2. Anthony Sobey, MDSpringfield, MA 011041801866629
  3. Jerome Sobieraj, MDBoston, MA 021181124036850
  4. Alberto Sobrado, MDNorth Andover, MA 018451285714519
  5. Carl Soderland, MDIpswich, MA 019381184725566
  6. Ingrid Soderlund, M.D.Somerville, MA 021431265562706
  7. Thet Soe, M.D.Greenfield, MA 013011558312561
  8. H Sokol, MDChestnut Hill, MA 024671740247170
  9. Ahda SolangiDorchester, MA 021241245929082
  10. Daniel Solomon, MD MPHBrookline, MA 024451780634287
  11. Martin Solomon, MDBrookline, MA 024451326029133
  12. Sonja Solomon, M.D.Boston, MA 021151265752141
  13. John Solomonides, M.D.Worcester, MA 016551407839939
  14. Michael Solon, MDWest Springfield, MA 010891366400764
  15. Navjot Somal, MDWeymouth, MA 021901477049120
  16. Aditya Somasundaram, MDBoston, MA 021181285318758
  17. Janarthanan Someswarananthan, MDChelmsford, MA 018241134212830
  18. Marvin Somi, MDDanvers, MA 019231356304646
  19. Diane Somlo, MDNewton, MA 024621700463080
  20. Benjamin Sommers, M.D., PH.D.Jamaica Plain, MA 021301275733818
  21. Jason Son, DOFramingham, MA 017021508252065
  22. Vikram Sondhi, M.D.Springfield, MA 011081578527685
  23. Min Song, MDMilton, MA 021861982715256
  24. Zirui Song, MD, PHDBoston, MA 021141740693910
  25. Renu Soni, M.D.Boston, MA 022151649276585
  26. Adam Sonnenberg, MD PHDNewton, MA 024591437952488
  27. Ayushman Sood, M.D.Springfield, MA 011071396232005
  28. Megha Sood, MDSalem, MA 019701285254581
  29. Ravinder Soodan, MDHingham, MA 020431053488098
  30. Ehab Sorial, M.D.Fall River, MA 027211083608442
  31. David Sorkin, MDPittsfield, MA 012011437576535
  32. Daniel Sosa, MDSalem, MA 019701982100947
  33. Ivan Soto-Arape, M.D.Boston, MA 021151417915315
  34. Carl Sousa, M.D.Medway, MA 020531720119951
  35. Stephen Southard, MDBurlington, MA 018051144328147
  36. Scott Souther, MDBraintree, MA 021841033550157
  37. Bonnie Southworth, MDBoston, MA 021151891752291
  38. Ralph Spada, M.D., FACPLeominster, MA 014531639376577
  39. Kristi Spaho, M.D.Boston, MA 021201922205673
  40. Linda Spanagel, M.D.Shrewsbury, MA 015451528040649
  41. Ellen Spar, M.D.Boston, MA 022151285686386
  42. Steven Spector, MDBoston, MA 021111770685737
  43. Frank Speizer, MDBoston, MA 021151962596239
  44. Gail Spellman, NPBurlington, MA 018031386742138
  45. Denise Spence, MDAmherst, MA 010021447358106
  46. Carina Spencer, M.D.Boston, MA 021141255642773
  47. H Spencer, MDWellfleet, MA 026671013956648
  48. Jacqueline Spencer, M.D.Cambridge, MA 021401851482418
  49. Stacey Sperling, M.D.Medford, MA 021551225153042
  50. Mark Sperry, M.D.Boston, MA 021111376773754

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.