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 106 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. Lipi Roy, M.D., M.P.H.Boston, MA 021181104086636
  2. Payel Roy, MDBoston, MA 021181609119635
  3. Michael Royster, M.D.Hyannis, MA 026011184913899
  4. Steven Rozak, M.D.Auburn, MA 015011154302065
  5. Hallie Rozansky, MDBoston, MA 021181811426620
  6. Flora Rozhansky, M.D.Newton, MA 024581063671931
  7. Yuheng Ruan, M.D.Boston, MA 021111811155005
  8. Robert Rubano, M.D.Fall River, MA 027211326087313
  9. David Rubin, M.D.Wellesley, MA 024811225065493
  10. Emily Rubin, MD, JDBoston, MA 021141205063757
  11. Leonard Rubin, MDBoston, MA 021141013907385
  12. Douglas Rubinson, M.D., PH.D.Boston, MA 022151457559585
  13. Sharon Rubrake, MDLawrence, MA 018431922089754
  14. Meghan Rudder, M.D.Chestnut Hill, MA 024671588012223
  15. Benjamin Rudin, M.D.Adams, MA 012201437131356
  16. Roy Ruff, MDBeverly, MA 019151326072661
  17. Gregory Ruhnke, M.D.Boston, MA 021141679541395
  18. Juan Ruiz, MDBoston, MA 021141538746565
  19. Virginia Ruiz, MDBoston, MA 021181639713928
  20. Jorge Ruiz De Somocurcio Bertocchi, MDBrockton, MA 023011942091285
  21. Karina Ruiz-Esteves, MDBoston, MA 021141861029704
  22. Mayu Sekiguchi Runge, MDSpringfield, MA 011091295944593
  23. Lynn Rushton, N.P.Westford, MA 018861033169701
  24. Joshua Russell, DOWorcester, MA 016081992234470
  25. Sarah Russell, M.D.Nantucket, MA 025541417241415
  26. Arthur Russo, MDSouthbridge, MA 015501730196205
  27. Gregory Russo, MDBoston, MA 021141912693565
  28. Jennifer RussoLowell, MA 018521699032128
  29. Margaret Russo, M.D.Northampton, MA 010601558338533
  30. Nancey Russo, DOBrockton, MA 023011609821651
  31. William Ruth, MDCambridge, MA 021391972578318
  32. Patricia Ruze, MDConcord, MA 017421164654885
  33. Christine Ryan, MDBoston, MA 021151770013542
  34. Rosemary Ryan, M.D.Hyde Park, MA 021361063551554
  35. Lucas Ryback, MDFall River, MA 027201164582508
  36. Elizabeth Ryer, DOPeabody, MA 019601417344532
  37. Edward Ryter, MDSouth Hadley, MA 010751497744213
  38. Stephen Ryzewicz, MDSpringfield, MA 011071689774796
  39. Ana Saade Lemus, MDBurlington, MA 018051316564180
  40. Marian Saba, MDWorcester, MA 016051083267280
  41. Virginia SabetDedham, MA 020261124156161
  42. Shakti Sabharwal, M.D.Brockton, MA 023011164525432
  43. Riffat Sabir, MDSpringfield, MA 011071811305972
  44. Hafsa Sabzposh, M.B.B.S.Boston, MA 021151144842063
  45. Howard Sachs, M.D.Worcester, MA 016551275516940
  46. Richard Sachs, MDLowell, MA 018541518929512
  47. Joyce Sackey, M.D.Boston, MA 021111720153471
  48. Chana Sacks, MDBoston, MA 021141043506512
  49. Frank Sacks, MDBoston, MA 021151124081542
  50. Robert Sackstein, MD PHDBoston, MA 021141306887302

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.