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 24 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. Jooho Chung, MD PHDBoston, MA 021141598255945
  2. Richard Chung, M.D.Dedham, MA 020261639344807
  3. Amy Churchill, MDActon, MA 017201033171749
  4. Lawrence Churchville, MDTownsend, MA 014691235231226
  5. Yung Chyung, MDBoston, MA 021141922129485
  6. Philip Ciampa, MDChestnut Hill, MA 024671215084181
  7. Nancy Cibotti Granof, MDMedford, MA 021551336120815
  8. Chloe Ciccariello, MDBoston, MA 021181710373204
  9. Joanna Cichon, MDChicopee, MA 010201891768529
  10. Ricardo Cigarroa, MDBoston, MA 021141114281581
  11. Laurence Cignoli, M.D.Worcester, MA 016081598884983
  12. George Clairmont, MDAbington, MA 023511093734220
  13. David Clapham, M.D.Boston, MA 021151376501759
  14. Alicia Clark, MDBoston, MA 022151952578460
  15. Cheryl Clark, MD, M.S., SDRoxbury Crossing, MA 021201881626042
  16. Devin Clark, MDBoston, MA 021151144653700
  17. Marilyn Clark, M.D.Boston, MA 021181164534624
  18. Oliver Clark, MB BCH BAOBoston, MA 022151942887641
  19. Anna Clarke, MDSpringfield, MA 011071457715138
  20. Subha Clarke, MDWilbraham, MA 010951477572436
  21. Sara Clay, MDLowell, MA 018541073575809
  22. Walter Clayton, M.D.South Hamilton, MA 019821710026208
  23. Emmett Clemente, M.D.Milford, MA 017571699790709
  24. David Clinton, MDSouth Hadley, MA 010751306951645
  25. Marvin Clopper, M.D.Peabody, MA 019601912965047
  26. David Clossey, MDBoston, MA 021151710514054
  27. Jennifer Cluett, MDBoston, MA 022151962491183
  28. Heather Coates-Krawitz, MDEverett, MA 021491679575666
  29. Brandon Cobbins, MDBoston, MA 021141154886562
  30. Irene Cody, M.D.Agawam, MA 010011912965468
  31. Stephanie Cody, MDPlymouth, MA 023601205098522
  32. Thomas Cody, M.D.Kingston, MA 023641225104912
  33. Megan Coffee, MD, PHDBoston, MA 021141528189099
  34. Steven Coffin, MDMarlborough, MA 017521720519325
  35. Kathryn Cohan, M.D.Mendon, MA 017561174554067
  36. Caitlin Cohen, MDCharlestown, MA 021291710368121
  37. Calvin Cohen, M.D.Boston, MA 022151063484426
  38. Daniel Cohen, MDLee, MA 012381285692129
  39. David Cohen, MDAttleboro, MA 027031649205790
  40. Gary Cohen, MDSalem, MA 019701598711251
  41. George Cohen, MDBoston, MA 021141861482036
  42. Ilene Sandra Cohen, M.D.Lowell, MA 018511386787844
  43. James Cohen, M.D.Westford, MA 018861013965003
  44. Leslie Cohen, MDJamaica Plain, MA 021301326277450
  45. Marc Cohen, MDBoston, MA 022151477616977
  46. Mardge Cohen, M.D.Boston, MA 021181366537979
  47. Marya Cohen, MDChelsea, MA 021501669508040
  48. Matthew Cohen, M.D.Boston, MA 022151497192256
  49. Mauri Cohen, M.D.Danvers, MA 019231093767857
  50. Natalie Cohen, MDActon, MA 017201700179678

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.