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 18 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. David Byrne, M.DHaverhill, MA 018301215925938
  2. Justin Byrne, MDSalem, MA 019701982650677
  3. Virginia Byrnes, M.D.Boston, MA 021111942316872
  4. Susan Cabot, MDBoston, MA 021991124037601
  5. Patricio Cabral, MDFramingham, MA 017021639465305
  6. Paul Cabral, D.OGreenfield, MA 013011932553641
  7. Clara Cabrera, M.D.Stoneham, MA 021801487851697
  8. Miguel Cabrera, MDLawrence, MA 018431609861061
  9. Arthur Cabus Montenegro, MDEast Boston, MA 021281972031722
  10. James Cacciola, MDMedford, MA 021551922011022
  11. Bismarck Cadet, MDBoston, MA 021991538127725
  12. Kristy Cahill, M.D.Danvers, MA 019231528228608
  13. Jordan Cahn, MDCambridge, MA 021391255917902
  14. Christopher Cai, MDBoston, MA 021151265010250
  15. Rebecca Caine, M.D.Pittsfield, MA 012011730147356
  16. Steven Cajamarca, MDBoston, MA 021181598496796
  17. Christopher Calahan, MDBoston, MA 021141558821983
  18. Hugo Calavia Liano, MDBoston, MA 021291568026367
  19. Stephen Calderwood, MDBoston, MA 021141134119746
  20. Hila Calev, M.D.Boston, MA 022151871942052
  21. Alan Calhoun, MDAmherst, MA 010031740259993
  22. Dana CallahanBoston, MA 021151417416231
  23. Megan Callahan, M.D.Everett, MA 021491881662864
  24. Myfanwy Callahan, M.D.Medford, MA 021551538428685
  25. Alphonse Calvanese, MDSpringfield, MA 011041700951167
  26. Joyce Camac-Weiser, M.D.Boston, MA 022151942271416
  27. Ricardo Camacho Vargas, MDLawrence, MA 018411619462157
  28. Carlos Camargo, MDBoston, MA 021141376525428
  29. Sandra Cameron, M.D.Springfield, MA 011041366475469
  30. Lee Campano, MDMilford, MA 017571104041797
  31. Bruce Campbell, MDBurlington, MA 018051831297837
  32. Gregory Campbell, M.D.Springfield, MA 011071497287254
  33. Lauren CampbellBoston, MA 022151184002040
  34. Pedro Henrique Camperoni LucianoSalem, MA 019701619898731
  35. Edward Campion, M.D.Boston, MA 021151487724480
  36. Francis Campion, M.D.Boston, MA 022151730150285
  37. Nicole Campion Dialo, MDBoston, MA 021181851910111
  38. Rafael Campo, M.D.Boston, MA 022151699848846
  39. David Cancian, MDWatertown, MA 024721962496539
  40. Tinah Canda, MDBrockton, MA 023011487800900
  41. Sheyla CandidoBoston, MA 021141235660580
  42. Leann Canty, M.D.Cambridge, MA 021381205807781
  43. Linda Canty, MDSpringfield, MA 011091639252240
  44. Shanjin Cao, MD, PHDFall River, MA 027211497012603
  45. Randy Caplan, D.O.Wareham, MA 025711336136399
  46. Daniela Capriles Diaz, M.D.Concord, MA 017421104000884
  47. Jay Servando Capunitan, M.D.Brockton, MA 023011619155645
  48. Victor Carabba, MDGloucester, MA 019301386673184
  49. Timothy Caradonna, MD, PHDBoston, MA 021151275222309
  50. Pascale Carbonara, M.D.Boston, MA 022151194755850

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.