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 56 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. Robert Jandl, M.D.Southborough, MA 017721770572315
  2. Robert Janett, MDCambridge, MA 021391992870497
  3. Charley Jang, MDBoston, MA 021141306589007
  4. Muhammad Janisar, M.D.Cambridge, MA 021381972883197
  5. Marjorie JanvierRoxbury, MA 021191598931628
  6. John Jao, M.D.Boston, MA 021111538359674
  7. Anna Japaridze, MDSpringfield, MA 011071114111465
  8. Paul Jaques, M.D.Osterville, MA 026551750365227
  9. Sofia Jaramillo Quiroz, MDLawrence, MA 018411033779475
  10. Vishal Jariwala, M.D.Winchester, MA 018901316209190
  11. Isabel Jarmel, MDBoston, MA 021111588467732
  12. Ivana Jarolimova, MDBrighton, MA 021351306833942
  13. Pavankumar Jasthi, M.DSpringfield, MA 011991356639702
  14. Hugo Jauregui, MDDartmouth, MA 027471124084611
  15. Houman Javady, M.D.Worcester, MA 016081992110415
  16. Nauman JavedBoston, MA 021151447004312
  17. Saud Javed, M.D.Worcester, MA 016051063689354
  18. Wilfredo Javier Rojas, MDBoston, MA 021181003518317
  19. Shubhada Javlekar, MDShrewsbury, MA 015451346218898
  20. Raagini Jawa, M.D., M.P.H.Boston, MA 021181508284720
  21. Sajjadh Mohamed Jawahar AliWorcester, MA 016081205448487
  22. Nosheen Jawaid, D.OMelrose, MA 021761912311408
  23. Marie-Louise Jean-Baptiste, M.D.Cambridge, MA 021391699700682
  24. Erica Jean-PierreDorchester, MA 021211801438809
  25. Lydia Jeffcoat, MDNewburyport, MA 019501699874495
  26. Joyce Jen, M.D.Boston, MA 022151780621896
  27. Anupam Jena, MD, PHDBoston, MA 021141992932438
  28. Alan JenestChelsea, MA 021501417017625
  29. Andrew JenkinsBoston, MA 021151215564778
  30. Kathleen Jenkins, M.D.Boston, MA 021151144857566
  31. Joshua Jennings, MDChelsea, MA 021501609978857
  32. Lorraine Jennings, MB.BCHBoston, MA 021141982925152
  33. Hans Jeppesen, M.D.Salem, MA 019701669678298
  34. Michael Jernigan, M.D.North Quincy, MA 021711205027208
  35. Kanishq Rajan Jethani, M.DSpringfield, MA 011071003553744
  36. Liam Jette, M.D.Boston, MA 021111184005431
  37. James Jewell, MDLeeds, MA 010531427041854
  38. John Jewett, M.D.Jamaica Plain, MA 021301801871116
  39. Julia Jezmir, MDBoston, MA 021151114418670
  40. Anil Jha, M.DLowell, MA 018541609258896
  41. Ashish JhaBoston, MA 021301992806848
  42. Neeti Jha, M.D.Wilmington, MA 018871184843559
  43. Samir JhaPlymouth, MA 023601871070433
  44. Swati Jha, MDWorcester, MA 016051336644970
  45. Huiling JiFall River, MA 027201962998468
  46. Haixia Jia, M.D.Dorchester, MA 021241104207430
  47. Ginger JiangBoston, MA 022151912491655
  48. Karen JiangBoston, MA 021151801138987
  49. Lei Jiang, M.D.Worcester, MA 016041760439277
  50. Victoria Jiang, MDBoston, MA 021141073076196

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.