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 58 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. Sinju JosephBoston, MA 021351932804002
  2. Tatiana JosephBrighton, MA 021351417518101
  3. Ashok Joshi, M.D.North Billerica, MA 018621679568331
  4. Kirti Joshi, MDSpringfield, MA 011071154468957
  5. Priya Joshi, M.D.Boston, MA 021091619138302
  6. Shawn Joshi, MD, PHDBoston, MA 021151417635939
  7. Vineeta Joshi, M.D.,Concord, MA 017421972614188
  8. Allen Joslin, M.D.Adams, MA 012201396727202
  9. Erin Jospe, M.D.Boston, MA 021091033224092
  10. Zaven Jouhourian, MDGloucester, MA 019301255374518
  11. Nicholas Joza, M.D.Boston, MA 021111407111552
  12. Thomas Judd, MDHolyoke, MA 010401780788802
  13. David Judge, MDBoston, MA 021141568449403
  14. Dainius Juknelis, MDNatick, MA 017601073731501
  15. Alexander Julian, MDBoston, MA 021111831849967
  16. Arjun JunejaBoston, MA 021111295674430
  17. Ana Junqueira, M.D.Boston, MA 021181205072543
  18. Jeronimo Junqueira, M.D.Boston, MA 021181366688608
  19. Marisa Jupiter, M.D.Boston, MA 022151932360310
  20. Stephen Juraschek, MD, PHDBoston, MA 022151144542762
  21. Ronit Juthani, MDWorcester, MA 016081922786128
  22. Vanitha JuttanahalliPittsfield, MA 012011033524814
  23. Chadi Kaba, M.D.Attleboro, MA 027031811945694
  24. Parisa Kaboli, M.D.Worcester, MA 016051710030754
  25. Allen Kachalia, MD JDBoston, MA 021151346231982
  26. Krzysztof Kacprzak, M.D.Webster, MA 015701952364523
  27. Nancy Kaddis, M.D.Cambridge, MA 021381053554949
  28. Hessa Kadet, M.D.Brighton, MA 021351376580480
  29. Thomas Kaegi, M.D.Concord, MA 017421578552121
  30. William Kaelin, M.D.Boston, MA 021151093994493
  31. Joseph Kagan, MDBrockton, MA 023011851388029
  32. Penelope KaganBrockton, MA 023011194341008
  33. Dmitry Kahn, MDBoston, MA 021351063062180
  34. Olivia Kahn-Boesel, MDBoston, MA 021141669231320
  35. Ann Kailath, MDWest Roxbury, MA 021301780619932
  36. Evan Kaiser, MDTaunton, MA 027801750309233
  37. Petra Kajla, M.D.Worcester, MA 016041144203126
  38. Margaret KalaBoston, MA 021141891149464
  39. Badal Kalamkar, MD, MPHMarlborough, MA 017521114214756
  40. Pooja Kalantri, MDWorcester, MA 016081578049821
  41. Michael Kalfopoulos, MDWorcester, MA 016051235634320
  42. Richard Kalish, MDBurlington, MA 018031154394955
  43. Sara Kalkhoran, M.D.Boston, MA 021141518283274
  44. Sean Kalra, M.D.Boston, MA 021151578099503
  45. Joshua Kalter, M.D.Westfield, MA 010851669534921
  46. Katelyn Kalutkiewicz, MDCambridge, MA 021381518451848
  47. Sonia KamalBrockton, MA 023011528455052
  48. Chandrika Kambam, M.D.Brockton, MA 023011568578425
  49. Mihir Kamdar, MDBoston, MA 021141689729196
  50. Ibrahim Kamel, MD, MHABrighton, MA 021351922700103

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.