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 25 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. Pieter Cohen, M.D.Somerville, MA 021431366482804
  2. Richard Cohen, M.D.Cambridge, MA 021391639224363
  3. Robert Cohen, M.D.Mashpee, MA 026491548226319
  4. Saul Cohen, M.D.Weston, MA 024931275572950
  5. H Cohn, M.D.Boston, MA 021181437470283
  6. Robert Coit, M.D.Harvard, MA 014511235250465
  7. Donald Colantino, MDStoneham, MA 021801225008410
  8. Jesse ColemanWorcester, MA 016551285139428
  9. Gary Coles, MDFranklin, MA 020381841285632
  10. Stacy ColettiWilmington, MA 018871043170046
  11. Christopher Coley, MDBoston, MA 021141144293002
  12. Kristin Collins, MDNewton, MA 024621134575038
  13. Mark Collins, MDOsterville, MA 026551255368494
  14. Michael Collins, M.D.Worcester, MA 016551063602167
  15. Ursula Collinson, M.D.Boston, MA 022411932182847
  16. Amy Colson, MDCambridge, MA 021391760557185
  17. Maureen Colton, APRNCambridge, MA 021391669743548
  18. Richard Colvin, MD PHDBoston, MA 021141558449744
  19. Dylan Combs, MDFramingham, MA 017021114668563
  20. Robert Commito, M.D.Stoneham, MA 021801730273822
  21. Dawn Comstock, MD, PHDBoston, MA 021151811686959
  22. Alene Conant, M.D.Dedham, MA 020261093895468
  23. Loring Conant, M.D.Cambridge, MA 021391285753426
  24. Mary Connelly, M.D.Boston, MA 021111265586333
  25. Maureen Connelly, M.D.Boston, MA 021151083649180
  26. Krissie Connor, DOWorcester, MA 016051346201225
  27. Maria Connor, MDBraintree, MA 021841144252248
  28. Rebecca Connor, M.D.Waltham, MA 024531598880379
  29. Jade Connor Eruchalu, MD, MSCBoston, MA 021141316688591
  30. Larisa Connors, MDChestnut Hill, MA 024671629020987
  31. Michael Connors, MDHopkinton, MA 017481184690620
  32. Susan Connors, M.D.Franklin, MA 020381811934094
  33. Thomas Consolati, MDLee, MA 012381326006362
  34. Dino Constantinou, MDBrockton, MA 023011770578932
  35. Harold Contreras Martinez, MDFall River, MA 027211659651917
  36. Sarah ConwayBoston, MA 021151811346711
  37. Jan Cook, M.D.Boston, MA 022151437152139
  38. Nakela Cook, M.D.Boston, MA 021141447222823
  39. Thorley Cook, D.O.Franklin, MA 020381841221876
  40. Victoria Cook, M.D.Springfield, MA 011041235163346
  41. Adelaide Cooke, MDBoston, MA 021111649119272
  42. Amanda Cooke, M.D.Boston, MA 022151356755607
  43. Josephine Cool, MDBoston, MA 022151922461375
  44. Benjamin Cooley, MDBrockton, MA 023011619958030
  45. Cynthia Cooper, M.D.Boston, MA 021141972589984
  46. Donna Cooper, MD MPHBoston, MA 021141700876869
  47. Marcus Cooper, M.D.Worcester, MA 016551588622989
  48. Michael Cooper, M.D.Framingham, MA 017011588682710
  49. Nancy Cooper, M.D.Newton Lower Falls, MA 024621669582193
  50. Robert Cooper, MDMedway, MA 020531295917573

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.