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 131 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. Ricardo Wellisch, M.D.Cambridge, MA 021381952364861
  2. Annalee Wells, D.O.Lynn, MA 019011154564060
  3. Jenny Wen, MD MPHBoston, MA 021141942745989
  4. Yanping Wen, M.D.Quincy, MA 021691295767721
  5. Mary Wendel, MDMillbury, MA 015271528287794
  6. Melissa Wendt, M.D.Newton, MA 024621043477821
  7. Jonathan Weng, MDBoston, MA 021111386339182
  8. Mark Wenneker, M.D.Newtonville, MA 024601194861740
  9. David Wenzel, M.D.Wellesley, MA 024811063459279
  10. Alain-Marc Werner, M.D.Newburyport, MA 019501407856743
  11. Robert Wespiser, MDLee, MA 012381295783819
  12. Amy West, M.D.Cambridge, MA 021381295149961
  13. Suzanne Westbrook, MDCambridge, MA 021381962515346
  14. Amanda Westlake, M.D.Springfield, MA 011091154687820
  15. Charles Weston, M.D.Agawam, MA 010011053379248
  16. Craig Weston, M.D.Haverhill, MA 018301437145075
  17. Elizabeth Westphal, MDMarlborough, MA 017521255376182
  18. Hilde Westvik, MDGroton, MA 014501235368242
  19. Andrew Wetstone, MDLongmeadow, MA 011061194705228
  20. Deborah Wexler, MDBoston, MA 021141730179342
  21. James Wharam, MDBoston, MA 022151740280288
  22. Brad Whateley, M.D.Williamstown, MA 012671861596728
  23. Amy Wheeler, MDRevere, MA 021511902896079
  24. Janet Whelan, M.D.Provincetown, MA 026571770685190
  25. Anthony White, M.D.Worcester, MA 016101235254186
  26. Kathleen White, D.O.Marlborough, MA 017521003907080
  27. William White, MDWorcester, MA 016051548765043
  28. Amanda Whitehouse, MDSpringfield, MA 011091275109548
  29. Jeremy Whyman, M.D.Boston, MA 022151255603452
  30. John Whyman, M.D.Wellesley, MA 024811164480315
  31. Hasith Wickramasinghe, MDSpringfield, MA 011071144782715
  32. Geoffrey Wickwire, M.D.Milton, MA 021861710924915
  33. Amy Wiegandt, MDWareham, MA 025711285692525
  34. Jessica Wieselquist, MDNorth Chelmsford, MA 018631144255712
  35. Robin Wigmore, M.D.Boston, MA 022151205022639
  36. Herath Wijerathna, M.D.Sutton, MA 015901912232307
  37. Wayne Wild, M.D.Watertown, MA 024721831238625
  38. Elisabeth Wilder, M.D.Boston, MA 021111912003815
  39. Alphonse Wilfred, M.D.Brockton, MA 023021518990829
  40. Samuel Wilk, MDBoston, MA 021111376482604
  41. Spencer Wilking, MDBoston, MA 021141205818358
  42. Joanne Wilkinson, M.D.Wellesley, MA 024811174571020
  43. Joshua Wilkinson, DOBoston, MA 021151265061204
  44. Christine Will, M.D.North Dartmouth, MA 027471760458632
  45. Devina Willard, MDNorwell, MA 020611477843399
  46. Walter Willett, M.D.Boston, MA 021151932220001
  47. Arthur Williams, M.D.Braintree, MA 021841811953664
  48. Constance Williams, M.D.Andover, MA 018101326155912
  49. Ellen Williams, MDBoston, MA 021141912997446
  50. Linus Williams, MD, PHDBurlington, MA 018031811671522

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.