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 70 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. Jonathan Lee, M.D.Jamaica Plain, MA 021301003917626
  2. Kristen Lee, M.D.Boston, MA 021181740546530
  3. Lyndon Lee, MDBoston, MA 021141447871231
  4. Mary Yu-Mee Lee, M.D.Boston, MA 021111578754677
  5. Nancy Lee, M.D.Worcester, MA 016551306284096
  6. Patrick Lee, M.D.Lynn, MA 019011740208164
  7. Paul Lee, M.D.Teaticket, MA 025361558498352
  8. Rebecca Lee, M.D.Danvers, MA 019231497723415
  9. Seung Lee, M.D.Boston, MA 022151588015317
  10. Suo Lee, MDQuincy, MA 021691457340671
  11. Wen Yee Lee, M.D.Chelmsford, MA 018241396701777
  12. Wooseung Lee, M.D.Chelmsford, MA 018241457500688
  13. Yong Hwa Lee, M.D.Somerville, MA 021431295849198
  14. Yonghyun Lee, M.D.Framingham, MA 017021104278027
  15. Lorraine Lee-Ang, MDNorwood, MA 020621588956387
  16. Naomi Leeds, MDBoston, MA 021141659362010
  17. Benjamin Leffel, M.D.Weymouth, MA 021901023469525
  18. Armida Lefranc Torres, MDBrockton, MA 023011639664436
  19. Edward Legare, M.D.Wellesley, MA 024811528084191
  20. Kaila Legare, M.D.Newton, MA 024621144711540
  21. Nicole Leggiero, MDBoston, MA 021181649973363
  22. Margaret Legner, MDDanvers, MA 019231023006962
  23. Lisa Lehmann, M.D.Boston, MA 021201477650083
  24. Patricia Lehmann, MDPittsfield, MA 012011114007671
  25. Adi Leiba, M.D.Cambridge, MA 021381356536411
  26. Helen Leibner, MDBoston, MA 021151154374346
  27. Richard Leigh-Pemberton, M.D.Boston, MA 021161063599231
  28. Robert Leinbach, MDBoston, MA 021141699765875
  29. Robert Leitch, MDSouth Deerfield, MA 013731598734188
  30. Karen Leitner, M.D.Cambridge, MA 021391043283658
  31. Derek Lejeune, MDBoston, MA 021111235791294
  32. Jyothirmayi Lekkala, M.D.Springfield, MA 011091982951992
  33. Alexandra Lema Morocho, MDBoston, MA 021181124691480
  34. Paul Lemaitre, M.D.Andover, MA 018101255370250
  35. Michael Lemieux, MDWorcester, MA 016551760123731
  36. Diana Lemly, MDBoston, MA 021141366601726
  37. Sara Lennox, M.D.Cambridge, MA 021381669438511
  38. Constance Lentz, MDAmherst, MA 010031003883513
  39. James Leone, MDWilbraham, MA 010951659340461
  40. Patrick Leong, DOSomerville, MA 021451447237003
  41. Stephan Philip Leonhardt Altmayer, MDFramingham, MA 017021437728821
  42. Todd LepineLenox, MA 012401225090079
  43. Anya Lepp, MDBoston, MA 022151770742116
  44. Richard Lerner, M.D.Worcester, MA 016551477536142
  45. Ritche Mikl Lero, M.D.Dorchester, MA 021241235309014
  46. Erica Lescinskas, MDBoston, MA 021141184878225
  47. Tyler Lescure, MDBoston, MA 021141518594928
  48. Gregory Leslie, M.D.Worcester, MA 016551710305289
  49. Richard Leslie, M.D.Worcester, MA 016051871955856
  50. Cammie Lesser, MD PHDBoston, MA 021141639160765

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.