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 9 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. Brinda Balakrishnan, M.D., PH.D.Boston, MA 022151447513809
  2. Devasena Balasubramaniam, M.D.Waltham, MA 024511396936498
  3. Steven Baldassano, MDBoston, MA 021141417585076
  4. Andrew Balder, MDSpringfield, MA 011091720188832
  5. Samantha BalesBoston, MA 021141609463652
  6. Lori Balestrero, MDBoston, MA 021181750384046
  7. Ethan Balk, M.D.Boston, MA 021111831136571
  8. Mamtha Balla, MD.,MPHBoston, MA 021151346503034
  9. David Ballan, MDEast Longmeadow, MA 010281174698542
  10. Carmine Ballarano, MDBoston, MA 021151043830615
  11. Rebecca Ballard, M.D.Norfolk, MA 020561881789402
  12. Ranjit Balse, MDBedford, MA 017301225126634
  13. Marissa Baltus, MDBurlington, MA 018031942308796
  14. Dhirendra Bana, M.D.Jamaica Plain, MA 021301639134323
  15. Mary Banda, MDSouthbridge, MA 015501265481311
  16. Mehdi Bandali, MDBoston, MA 021141992445837
  17. Prakash Bandari, M.D.Natick, MA 017601407812084
  18. Usha Bandari, MDMarlborough, MA 017521003839200
  19. Ambuja BanerjeeBoston, MA 021111427856392
  20. Brian Banker, MDWilbraham, MA 010951871711192
  21. Run Banlengchit, MDBoston, MA 021111891313086
  22. Stephanie Banning, MDBoston, MA 022151669122784
  23. Arun Bansal, MDPittsfield, MA 012011235394495
  24. Chen Bao, MDBoston, MA 021111568083335
  25. Prachi BapatWorcester, MA 016081952148355
  26. Stefanie Baptista, MDSpringfield, MA 011071609436161
  27. Anjum Baqai, M.D.Woburn, MA 018011992837850
  28. Daphna Bar-Nur, M.D.Boston, MA 021351225410616
  29. Basim BaragabaWorcester, MA 016081659668101
  30. Tomer Barak, MD, MSC TMIH, DTMHBoston, MA 022151316250343
  31. Kevin Baratta, MDSpringfield, MA 011071518221878
  32. Robert Baratz, MDCanton, MA 020211205828399
  33. Ian BarbashBoston, MA 021141922328392
  34. Thomas Barber, M.D.Boston, MA 021181487627949
  35. Anna Barbosa, MDNorwell, MA 020611396960977
  36. Maria Barciona Guzman, MDHolyoke, MA 010401346625274
  37. Amy Barczak, M.D.Boston, MA 021141285680777
  38. Marc Bard, M.D.Newton, MA 024601598818924
  39. Ali Emre BardakBoston, MA 021351225872559
  40. Christiana Bardon, M.D.Chestnut Hill, MA 024671801843552
  41. Charlotte Barker, DOWorcester, MA 016051689202988
  42. Daniel Barker, M.D.Boston, MA 022151538480116
  43. Mary Barker, M.D.Wellesley, MA 024811215908132
  44. Wael Barkoudah, M.D.Stoughton, MA 020721932528924
  45. Chantal Barksdale, MDBoston, MA 021141013658046
  46. Lydia BarlowCambridge, MA 021381972986388
  47. Lisa Barna, M.D.Boston, MA 021631730379835
  48. Henrietta BarnesCambridge, MA 021391245393701
  49. Michael Barnett, M.D.Boston, MA 021151154617876
  50. Michelle Barnett, MDWestfield, MA 010851538127048

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.