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 89 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. Zachary Nightingale, M.D., PH.D.Worcester, MA 016081982834644
  2. Grace Niklas, MDHingham, MA 020431093740599
  3. Roozbeh Nikooie, MDWorcester, MA 016551497218226
  4. Ahmed Niloy, MDGreenfield, MA 013011194133629
  5. Elizabeth Nilson, M.D.Burlington, MA 018031639112022
  6. Claes Nilsson, MDDedham, MA 020261912006065
  7. Janhvi Nimbalkar, M.D.Springfield, MA 011071639467251
  8. Saira Nisar, M.D.Fall River, MA 027211114182680
  9. Meaghan Nitka, MDLowell, MA 018521952551376
  10. Benson Njenga, MDMilford, MA 017571447645437
  11. Jeremy Nobel, M.D.Brookline, MA 024461861538845
  12. Kenneth Nobel, M.D.Boston, MA 021311679519474
  13. Victoria Noble, MDLeeds, MA 010531760499420
  14. Jean-Luc Noel, MDWorcester, MA 016051164811741
  15. James NolanCambridge, MA 021391730242280
  16. Molly Noonan, M.D.Wilbraham, MA 010951881668630
  17. Momna Noor, M.D.Boston, MA 021151538857552
  18. Terrence Norchi, M.D., M.B.A.Framingham, MA 017021518053263
  19. Elizabeth Norian, M.D.West Roxbury, MA 021321356513410
  20. Nancy Norman, M.D.Boston, MA 021181972510527
  21. Craig Noronha, M.D.Boston, MA 021181881640084
  22. Mead Northrop, M.D.Plymouth, MA 023601982630968
  23. Cynthia Norton, D.O.Mansfield, MA 020481790910040
  24. Lisa Norton, M.D.Boston, MA 021181851378368
  25. Sireesha Nosina, M.DDorchester, MA 021241497193320
  26. Alexandra Nothern, MDBoston, MA 021301811259542
  27. Rosario Noto, M.D.Pittsfield, MA 012011356580013
  28. Damaris NouWatertown, MA 024721275770042
  29. Sonia Novik, MDSpringfield, MA 011991063620862
  30. Mark Novotny, MDNorthampton, MA 010611427072479
  31. Joanne Nowak, MDLawrence, MA 018431184615007
  32. Supapan Nualpring, M.D.Danvers, MA 019231164716205
  33. Sara Nuciforo, MDNorwell, MA 020611447231485
  34. Kara Nugent, MDBurlington, MA 018031477712057
  35. Mohamed Nuh, MDBoston, MA 021141205523354
  36. Ali Nujaidi, M.D.West Roxbury, MA 021321134516834
  37. Surajit Nundy, MD, PHDBoston, MA 021141336330455
  38. Eduardo Nunez, M.D.Boston, MA 021181629456199
  39. Nasifa Nur, MDWestborough, MA 015811710408463
  40. Matthias Nurnberger, M.D.Framingham, MA 017011982651774
  41. Kavitha Nutakki, MDMillbury, MA 015271639639909
  42. Gregory Nye, D.O.New Bedford, MA 027401861408395
  43. John O Brien, MDNewton Lower Falls, MA 024621588678965
  44. Eamon O Murchu, MDWorcester, MA 016081134407745
  45. Gail O'Brien, MDBoston, MA 021141548236466
  46. Joy O'BrienChestnut Hill, MA 024671689531386
  47. Mary O'Brien, M.D.Shrewsbury, MA 015451912980434
  48. Maureen O'Brien, M.D.Burlington, MA 018031982716270
  49. Douglas O'ConnellBoston, MA 021181801478383
  50. Michael O'Connell, M.D.Tewksbury, MA 018761174543862

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.