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 115 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. Brett Simchowitz, MD, MPHBoston, MA 021141225441272
  2. Harley Simeone, M.D.Chestnut Hill, MA 024671023213865
  3. Biljana Simikic, DOSpringfield, MA 011091669681995
  4. Leigh Simmons, M.D.Boston, MA 021141437279478
  5. Paul Simmons, MDBoston, MA 021141467443341
  6. Harvey Simon, MDBoston, MA 021141487644084
  7. Lauren SimonBoston, MA 022151760058903
  8. Lisa Simon, MD, DMDBoston, MA 021151730594458
  9. Rachel Simon, MDBoston, MA 022151063080539
  10. Stephen Simon, M.D.East Boston, MA 021281568440857
  11. Steven Simon, M.D.Wellesley, MA 024811972549681
  12. Juliana Simonetti, M.D.Boston, MA 022151962639989
  13. Angela Simpson, MDFall River, MA 027201699723700
  14. Daniel Simpson, MDBrookline, MA 024451043277643
  15. Ana SinauridzeBoston, MA 021351982449732
  16. Aneesh SingalBoston, MA 021111689376154
  17. Gaurav Singal, M.D.Boston, MA 021141912227380
  18. Daniel Singer, MDBoston, MA 021141194700310
  19. Abhikrishna Singh, MDSalem, MA 019701154990687
  20. Aditya SinghWorcester, MA 016081326885328
  21. Arminder Singh, M.D.Springfield, MA 011031427088202
  22. Baljinder Singh, MDRaynham, MA 027671760660492
  23. Jang Singh, MDWorcester, MA 016041699757310
  24. Khavindra Singh, MDBurlington, MA 018051205719887
  25. Kunwar Singh, M.D.Malden, MA 021481932181088
  26. Madhvendra Singh, M.DBraintree, MA 021841174590681
  27. Niharika Singh, MDWorcester, MA 016551063654275
  28. Param Singh, MDClinton, MA 015101891859708
  29. Sabetta Singh, MDBoston, MA 021181982286514
  30. Sarita Singh, MDSpringfield, MA 011071801199005
  31. Shailendra Singh, M.D.Burlington, MA 018051114987146
  32. Shinu Singh, M.D.Boston, MA 021181477717668
  33. Sonal Singh, MDWorcester, MA 016551699757054
  34. Surya Singh, MDBoston, MA 021201609952829
  35. Vidur Singh, MDChicopee, MA 010201154817377
  36. Raju Singla, M.D.Fall River, MA 027211043204407
  37. Carl Singletary, M.D.Brockton, MA 023011912911892
  38. Gloria SingletonCambridge, MA 021381942055942
  39. Carrie Siracuse, M.D.Boston, MA 021181225203912
  40. Dimitre Sirakov, M.D.Lowell, MA 018541932332681
  41. Monica SircarCambridge, MA 021381548421696
  42. Krishnaveni Sirigaddi, MDSouthbridge, MA 015501013545326
  43. Stephanie Denise SisonBoston, MA 022151871013318
  44. Jordan SiuConcord, MA 017421548624935
  45. Myron Siu, M.D.Boston, MA 021111033218359
  46. Lakshmi Sivasankar, M.D.Chelmsford, MA 018241497799779
  47. Mark Skalski, MDSpringfield, MA 011181467676478
  48. Lara Skarf, M.D.West Roxbury, MA 021321902812340
  49. Nancy Skehan, M.D.Worcester, MA 016551740336569
  50. Ann Skopek, M.D.Hyannis, MA 026011396755211

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.