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 72 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. Yan Li, M.D.Worcester, MA 016551518948090
  2. Yun Li, MDBoston, MA 021141154826915
  3. Zhongzhen Li, M.D.Milford, MA 017571669797791
  4. Bill Lian, M.D.Boston, MA 021151366637761
  5. Jeromy Lian, MDBoston, MA 021181447414321
  6. Haisun Liao, MDMilford, MA 017571417022898
  7. Jeff Liao, M.D.Boston, MA 021141356787717
  8. Zachary Liao, MD, MPH, MSBoston, MA 022151538692207
  9. Zixi LiaoBoston, MA 021141447132170
  10. Daniel Liauw, MD, MPHChelsea, MA 021501336777382
  11. William Liaw, M.D.Wellesley, MA 024811912954611
  12. Lorky Libaridian, M.D.Revere, MA 021511497767958
  13. Robert Liberman, MDArlington, MA 024741194878678
  14. Howard Libman, M.D.Boston, MA 022151568520914
  15. David Licht, M.D.Longmeadow, MA 011061538350285
  16. Morgan Lichtenstein, MDBoston, MA 021141558718155
  17. Adam Licurse, M.D.Boston, MA 021151174843759
  18. David LiebermanNantucket, MA 025541235591991
  19. Judy Lieberman, MD, PHDBoston, MA 021151013977321
  20. Hannah Liebman, D.O.Worcester, MA 016051366975401
  21. Cindy Lien, M.D.Boston, MA 022151326095571
  22. Wei Lien, MDRevere, MA 021511750359477
  23. Sung Lieu, M.D.Boston, MA 021151700078177
  24. Michael Light, D.O.Plymouth, MA 023601063837292
  25. Benjamin Lightfoot, MDBrockton, MA 023011497749584
  26. Rishi Likhi, M.D.Medford, MA 021551497927388
  27. Armin Lilienfeld, MDJamaica Plain, MA 021301083604615
  28. Robert Lille, MDSouth Weymouth, MA 021901548247695
  29. Jina Lim, MDBoston, MA 021111164952214
  30. Jonathan Lim, M.D.Boston, MA 021151730566548
  31. Theresa Lim, MDRoslindale, MA 021311427037720
  32. Chien Lin, MDQuincy, MA 021691750399374
  33. Fenny Lin, M.D.Wellesley, MA 024811982616785
  34. Hannah Lin, MDJamaica Plain, MA 021301285204560
  35. Jianna LinCambridge, MA 021381568213981
  36. Joshua Lin, MDBoston, MA 021141295009686
  37. Juwen Lin, M.D.Burlington, MA 018051811969249
  38. Su-Fan Lin, M.D., MPHSterling, MA 015641457671596
  39. Sun Tien Lin, M.D.Springfield, MA 011031023001773
  40. Suru Lin, M.D., M.P.H.South Boston, MA 021271316112162
  41. Tien-Hsin Lin, M.D.East Boston, MA 021281841279593
  42. Timothy Lin, MDBoston, MA 021141669931903
  43. Stephanie Lin-Beckford, MDBoston, MA 021141003345034
  44. Lesiley Lincoln, M. D.Boston, MA 021141528000858
  45. Thomas Lincoln, MDSpringfield, MA 011071306860853
  46. Peter Lindblad, M.D.Worcester, MA 016081629058847
  47. Julia Lindenberg, M.D.Boston, MA 022151255365995
  48. Klaus Lindpaintner, M.D.Boston, MA 021151801943915
  49. Edgar Lindsey, M.D.Leeds, MA 010531801803119
  50. Gregory Lines, M.D.Cambridge, MA 021391053842773

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.