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 95 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. Sanjay Paudel, MDSpringfield, MA 011071396360988
  2. Lester Paul, MDBoston, MA 021091417957424
  3. Tenes Paul, DOWorcester, MA 016551881190809
  4. Natalie Pauli, MDWellesley, MA 024821073709572
  5. Jacob Paulson, MDWorcester, MA 016551144961343
  6. Ludek Pavlu, MDBoston, MA 021351366609901
  7. Taranveer Pawar, M.D.Cambridge, MA 021381952740813
  8. Shawn Pawson, MDGloucester, MA 019301659322758
  9. Manuel Paz, M.D.Attleboro, MA 027031831330349
  10. Barbara Pearl, M.D.North Dartmouth, MA 027471295701274
  11. Yale Pearlson, M.D.Boston, MA 022151962553149
  12. Steven Pearson, M.D.Boston, MA 022151992751697
  13. Robert Peck, M.D.Boston, MA 021141093890196
  14. Christopher Peckins, MDBoston, MA 021151134199714
  15. Genoveva Pedrique Lopez, M.D.Boston, MA 021351851524474
  16. Anthony Pellegrino, M.D.Worcester, MA 016061578545745
  17. Deneen Pelletier, M.D.Cambridge, MA 021381770571671
  18. Richard PelsCambridge, MA 021391336288141
  19. John Peluso, MDWilbraham, MA 010951568473197
  20. Michael Peluso, MDBoston, MA 021151437597788
  21. Adolfo Pena Salazar, MDWorcester, MA 016051255508735
  22. Cecilia Pena-Sisto, MDPittsfield, MA 012011992942189
  23. Barbara Penn, MDWellfleet, MA 026671467562579
  24. Dominic Pennachio, M.D.Chestnut Hill, MA 024671194830158
  25. Brent Pennington, MDPlymouth, MA 023601386629350
  26. Hildred Pennoyer, M.D.Boston, MA 022151083650592
  27. George Pentoliros, M.D.Amesbury, MA 019131285731430
  28. Thomas Percy, MDWestfield, MA 010851699709352
  29. Brian Pereira, M.D.Cambridge, MA 021401881793198
  30. Datson Pereira, M.B.B.S.Worcester, MA 016051750886859
  31. George Pereira, M.D.Taunton, MA 027801316986326
  32. Juan Perez, MDSomerville, MA 021441982686325
  33. Carolina Perez Carrion, MDWorcester, MA 016081891249959
  34. Pedro Emilio Perez-Cruz, M.D.Boston, MA 021141821318296
  35. Gracia Perez-Lirio, M.D.Needham, MA 024941184730012
  36. Carlos Perez-Velazquez, M.DShrewsbury, MA 015451134421258
  37. Christopher Perkins, MDNorwood, MA 020621669479622
  38. Emily Perkinson, MDBoston, MA 021181649929506
  39. Rachel Perla, M.D.Medford, MA 021551245202191
  40. Bernard Perlman, MDBoston, MA 021341477579456
  41. Donald Perlo, MDSomerville, MA 021441366555260
  42. Scott Perman, MDNorwood, MA 020621669478368
  43. Joseph Perrotto, MDNorwood, MA 020621639280555
  44. Michael Pescatello, M.D.Bellingham, MA 020191336165844
  45. Madeline Pesec, MDBoston, MA 021151972131506
  46. Steven Pestka, M.D.Newton, MA 024621407807498
  47. Dragan Petakov, MDLowell, MA 018541629030622
  48. Thomas Peteet, M.D.Boston, MA 021181912267378
  49. Caitlin Peterman, MDNewton, MA 024621215428610
  50. Barbara Peters, D.O.Concord, MA 017421609834563

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.