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 80 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. Ruth McLain, M.D.Randolph, MA 023681871526178
  2. Angela McLaughlin, MDBoston, MA 021181154779932
  3. Laura McLaughlin, MDWest Bridgewater, MA 023791386628873
  4. Cara McLaughlin Gavin, M.D.Boston, MA 022151710925037
  5. Jason McLean, MD, MPHBoston, MA 021181518660398
  6. Richard McMahon, MDHudson, MA 017491114949823
  7. Devin McManus, M.D.Falmouth, MA 025401548263486
  8. Nadia McMillan, MDBoston, MA 022151982262986
  9. Ciaran McMullan, M.D.Boston, MA 021141881899433
  10. Haley McMullenBoston, MA 021111710781737
  11. Sally McNagny, M.D.Needham, MA 024921205874583
  12. Cathryn McNamara, M.D.Quincy, MA 021691801852132
  13. Margaret McNamara, MDBoston, MA 021111093152134
  14. Mary McNaughton-Collins, MDBoston, MA 021141346230026
  15. Jennifer McNeely, M.D.Boston, MA 021151922128636
  16. Emily McPhillips, M.D.Lexington, MA 024201487692612
  17. Randall McShine, M.D.Sudbury, MA 017761770698664
  18. Gregory McSweeney, M.D.Norwood, MA 020621619967684
  19. John McWilliams, MDBoston, MA 021151366408411
  20. Christina Meade, MDBoston, MA 021151821529876
  21. Kathleen Meade, M.D.South Hadley, MA 010751194777177
  22. Lauren Meade, M.D.Springfield, MA 011091558460303
  23. Catherine Meador, MD, PHDBoston, MA 021151912435991
  24. Roseanna Means, MDChestnut Hill, MA 024671437115649
  25. Madalon Meany, MDCambridge, MA 021381245200021
  26. Mythily Meda, M.D.Chelmsford, MA 018241649469925
  27. Venkatrao Medarametla, M.DSpringfield, MA 011991134431737
  28. Mary Medeiros, MD, MPHFranklin, MA 020381346396561
  29. Anila Medina, M.D., M.P.HMillbury, MA 015271265499792
  30. Kristen Medley, MDJamaica Plain, MA 021301467192864
  31. Mitchell Medow, MDBoston, MA 021181851355440
  32. Caroline Meehan, MDBoston, MA 021141225520786
  33. David Meenan, D.O.Boston, MA 022151649217308
  34. Rosemary MehlWest Roxbury, MA 021321609825587
  35. Ateev Mehrotra, MDBoston, MA 022151245221654
  36. Mohamed Mehssen, MDSouth Boston, MA 021271578536389
  37. Darshan Mehta, M.D.Boston, MA 021141114992468
  38. Meetal Mehta, MDFoxborough, MA 020351730507104
  39. Pooja MehtaWatertown, MA 024721700346822
  40. Priyal Mehta, MDWorcester, MA 016081033948930
  41. James Meigs, MDBoston, MA 021141942275920
  42. William Meikrantz, M.D.Boston, MA 021091144288549
  43. Rachel Meirer, D.O.Springfield, MA 011071558792630
  44. James Meisel, MDBoston, MA 021181346224268
  45. Praveen Meka, MDBoston, MA 021151396946422
  46. Nyssa Melendez Rios, M.D.Boston, MA 021151922263581
  47. Judith Melin, MDBurlington, MA 018051396857009
  48. Rafael Meller, MDCambridge, MA 021381881884500
  49. Erika Mello, D.O.Fall River, MA 027201467576298
  50. Robert Mellors, MDNorwell, MA 020611598756991

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.