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 96 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. Erin Peters, MDBoston, MA 021081013238963
  2. Elizabeth Petersen, M.D.Boston, MA 021151942575410
  3. Kay Petersen, M.D.Boston, MA 022151821178054
  4. Bennett Peterson, MDMilford, MA 017571356704456
  5. David Peterson, MDWestfield, MA 010851619918752
  6. James Peterson, MDAdams, MA 012201194707158
  7. Karen PetersonUxbridge, MA 015691932162161
  8. Neal Peterson, MDCambridge, MA 021381912565979
  9. David Petillo, M.D.Braintree, MA 021841285669614
  10. Janine PetitoCambridge, MA 021391255862256
  11. Enrico Petrillo, M.D.Boston, MA 021991629217807
  12. Nathan PetrouNorwood, MA 020621437786100
  13. Paul Pettinato, M.D.Needham, MA 024921023048808
  14. David Petullo, MDLeominster, MA 014531003890344
  15. Colin Petz, M.D.Leeds, MA 010531881608438
  16. Cary Pfeffer, M.D.Lexington, MA 024211841330446
  17. Julie Pfeffer, MDWaltham, MA 024521083243943
  18. Thomas Pfeiffer, M.D.Cambridge, MA 021391528323805
  19. Girija Phadke, MBBSEast Boston, MA 021281841606894
  20. Jean Phalen, M.D.Needham, MA 024921376510271
  21. Dominique Pham, MDWest Roxbury, MA 021321891776662
  22. Judy Pham, MDBoston, MA 021141366017162
  23. Tan Pham, MDStoneham, MA 021801194715185
  24. Minh Phan, MDBoston, MA 021151578083382
  25. Tung Phan, MDWorcester, MA 016551699271429
  26. Katherine Phaneuf, MDWestford, MA 018861174571228
  27. Prince Philip, M.D.Worcester, MA 016051043507171
  28. Anthony Philippakis, M.D., PHDCambridge, MA 021381326275017
  29. Alexis PhillipsBoston, MA 021141972244820
  30. Christina Phillips, M.D.Cambridge, MA 021391962763730
  31. Christine Phillips, M.D.Boston, MA 021181730166612
  32. Oluwakemi Phillips, MDWorcester, MA 016051336608207
  33. Russell Phillips, M.D.Boston, MA 022151225076599
  34. Susan Phillips, M.D.Boston, MA 021181144241886
  35. William Phillips, MDBoston, MA 021111760628408
  36. Kristopher Philogene, M.D.Cambridge, MA 021381487005070
  37. Blessing Phinney, MDPittsfield, MA 012011316409782
  38. Rattna Phull, MDBrookline, MA 024451629035928
  39. Anil PhuyalWorcester, MA 016081194336800
  40. Ei Ei Phyu, M.D.Framingham, MA 017011407206311
  41. Anne Piantadosi, MD, PHDBoston, MA 021141497041958
  42. Michael Picard, MDBoston, MA 021141235120593
  43. Nicholas Picariello, M.D.Jamaica Plain, MA 021301255389151
  44. Alfred Piel, M.D.Springfield, MA 011181285697334
  45. Jennifer Piel, M.D.Springfield, MA 011181396039343
  46. Adrian Pieleanu, MDWalpole, MA 020811235399098
  47. Irina Pieleanu, MDBellingham, MA 020191528228459
  48. David Pierangelo, MDWestfield, MA 010851861467748
  49. Catherine Pierce, M.D.Boston, MA 021181881741684
  50. Claire-Cecile Pierre, M.D.Somerville, MA 021431770707242

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.