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 136 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. Michael Zacks, MDNewton, MA 024621043289622
  2. Jacob ZaemesBoston, MA 022151598261182
  3. Fahad Zafar, MDHyannis, MA 026011871013755
  4. Hira Zafar, M.D.Hyannis, MA 026011124479720
  5. Geraldine Zagarella, M.D.Jamaica Plain, MA 021301255356242
  6. Saliha Zahid, M.D.Springfield, MA 011071720642507
  7. Adrian Zai, M.D., PHDBoston, MA 021141346372463
  8. Abbas Zaidi, MDBrighton, MA 021351598752834
  9. Mansoor Zaidi, MDSpringfield, MA 011081861411647
  10. Eugene Zak, M.D.Fall River, MA 027211437145968
  11. Nada Zaknoun, MDFairhaven, MA 027191407905938
  12. Taufiq ZamanBurlington, MA 018051114303393
  13. John Zambrano, M.D., M.H.SBoston, MA 021091730422593
  14. Sarah Zambrano, MDBoston, MA 021151396322400
  15. Helia Zand, MDSalem, MA 019701174142988
  16. Keivan Zandinejad, M.D.Worcester, MA 016051871771733
  17. Zachary Zanfes, D.O.Wareham, MA 025711760829030
  18. Matthew Zanghi, M.D.Leominster, MA 014531346688041
  19. Monica Laurie Zangwill, M.D.Boston, MA 021161902921794
  20. Laima Zarins, MDCambridge, MA 021381669463246
  21. Ida Zarraga-Forsyth, M.D.East Boston, MA 021281548295678
  22. Michael Zaslow, M.D.Winchester, MA 018901588662985
  23. Matthew Zawasky, M.D.Quincy, MA 021691841669256
  24. Beth Zeeman, MDWayland, MA 017781073614657
  25. Jessica Zeidman, M.D.Chelsea, MA 021501184851644
  26. Lillian ZerihunBoston, MA 021151093391740
  27. Audrey ZhangBoston, MA 022151053949511
  28. Bessie ZhangBoston, MA 021151295581569
  29. Diana Zhang, MDBoston, MA 021111013409697
  30. Haihua Zhang, MDBoston, MA 021181205364643
  31. Hua Zhang, M.D.Foxboro, MA 020351730114893
  32. Jingzhou Zhang, MDBoston, MA 021181366931768
  33. Mengtao Zhang, MDBellingham, MA 020191558328641
  34. Qiyu Zhang, MD, PHDBoston, MA 021151275337545
  35. Tina ZhangWorcester, MA 016551982231379
  36. Yongkang Zhang, MDBoston, MA 021181205321056
  37. Zhenghao Zhang, M.D. PH.D.Brockton, MA 023011083982631
  38. Lillian Zhao, MDBoston, MA 021181932640158
  39. Allen Zhou, MDBoston, MA 021151164006391
  40. Helen Zhou, MDMarlborough, MA 017521538746839
  41. James Zhou, MDBoston, MA 021141720512692
  42. Li Zhou, M.D.Boston, MA 022151942247978
  43. Raymond Zhou, M.D., PH.D.Shrewsbury, MA 015451063486470
  44. Youqin Zhou, M.DMelrose, MA 021761134502446
  45. Jian Zhuang, MD, PHDBoston, MA 021151720729650
  46. Bushra Zia, MDHolyoke, MA 010401922552181
  47. Russell Zide, M.D.Burlington, MA 018051912012329
  48. Sarah Zifcak, M.D.Concord, MA 017421952369555
  49. Dmitriy Zilber, MDBeverly, MA 019151659462083
  50. Irina Zilberman, M.D.Boston, MA 021111407924947

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.