NPPES file of Aug 9, 2026

Emergency Medicine Physician in Massachusetts

1,829 NPPES records list emergency medicine physician with a practice address in Massachusetts, 26 per 100,000 residents, the 9th highest rate of 51. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search. Page 21 of 37.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207P00000X · 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, 543

  1. Boston543
  2. Worcester216
  3. Springfield123
  4. Brockton74
  5. Burlington48

Emergency Medicine Physician records in Massachusetts

  1. Craig Longo, M.D.Worcester, MA 016051588717524
  2. Kimberly Lonis-Scheub, M.D.Plymouth, MA 023601235177452
  3. Manon LoonisCambridge, MA 021391023570868
  4. Gina Lopez, M.D, M.P.HBoston, MA 021181275708869
  5. Mark Losordo, MDFalmouth, MA 025401285600569
  6. Nancy Louca, M.D.Brighton, MA 021351861657272
  7. Ann Loudermilk, M.D.Weymouth, MA 021901598702326
  8. Richard Louissaint, M.DEverett, MA 021491629331087
  9. Donna Louizides, M.D.Boston, MA 021351144252677
  10. Patrick Lowe, MDWorcester, MA 016551225666514
  11. Robert Lowenstein, MDBoston, MA 021181164496121
  12. John Lozada, M.D.Methuen, MA 018441982613105
  13. Sara Lozano, MDBrockton, MA 023021902021884
  14. John Lucas, M.D.Lawrence, MA 018411104802644
  15. Daniel Luczkow, MDWest Barnstable, MA 026681942250733
  16. Jennifer Luk, MD, MPHBoston, MA 021151619619731
  17. Kathryn Lupez, M.D.Boston, MA 022151073967196
  18. Lucienne Lutfy-Clayton, M.D.Springfield, MA 011991033157920
  19. Paul Lutz, M.D.Boxford, MA 019211487710489
  20. Susan Ly, MDWorcester, MA 016551164682415
  21. Elizabeth Lyford, M.D.Salem, MA 019701427478593
  22. Joseph Lykins, MDBoston, MA 021181578051124
  23. Everett Lyn, MDBoston, MA 021151639169261
  24. George Lynch, M.D.Weymouth, MA 021901134136658
  25. Brian Lyngaas, MDEverett, MA 021491629281993
  26. Richard Lyons, M.D.Ayer, MA 014321154463867
  27. Kerry Maccini, AGNPFall River, MA 027211811549231
  28. Bryanne Macdonald, MDSpringfield, MA 011071013477702
  29. Nathan Macdonald, M.D.Lowell, MA 018541639136591
  30. Gordon MacdougallBoston, MA 022151144809815
  31. Paige Machado, MDBoston, MA 021181609370154
  32. Wendy Macias Konstantopoulos, M.D., M.P.H.Boston, MA 021141043278807
  33. Fraser Mackay, M.D.Burlington, MA 018051629330410
  34. Cassandra Mackey, MDWorcester, MA 016551578927554
  35. Laura Macnow, MDBoston, MA 022151578610937
  36. Daniel Madden, MDSpringfield, MA 011071578024238
  37. Timothy Mader, MDSpringfield, MA 011991336236140
  38. Brendan Magauran, MDBoston, MA 021181215996269
  39. Janet Magnani, MDPalmer, MA 010691235149832
  40. Keenan Mahan, MD, MBANewton, MA 024621104387158
  41. G. Michael Mahoney, MDNewburyport, MA 019501558377291
  42. Liam MahoneyBoston, MA 021181407243504
  43. Mark Mahoney, M.D.New Bedford, MA 027401174563258
  44. Jane Mailloux, MDNew Bedford, MA 027401144236605
  45. Marilyn Maison, PAPittsfield, MA 012011730993437
  46. Zayir Malik, M.D.Boston, MA 021181669820742
  47. Lawrence Malinconico, MDWorcester, MA 016551215565080
  48. Kirsten Malsnee, M.D.Beverly, MA 019151306983507
  49. Hosana Mamata, MDBoston, MA 022151811456924
  50. Kevan Mamdouhi, MDBurlington, MA 018051013477512

Source: CMS NPPES, primary taxonomy 207P00000X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 9 of 51 per resident

  1. Pennsylvania30
  2. West Virginia28
  3. Illinois26
  4. Massachusetts26
  5. Hawaii26
  6. New York26
  7. 50 states and D.C.21

Source: CMS NPPES, primary taxonomy 207P00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

81.8% of these records appear in a Medicare file, against 81.5% 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. Massachusetts81.8%
  2. United States81.5%

Emergency Medicine Physician records in Massachusetts, measured

  • In a Medicare file1,497 of 1,829 · 81.8% here, 81.5% nationally
  • In the CMS Doctors and Clinicians file1,202 · 65.7% here, 58.7% nationally
  • Not updated in five years or more1,041 · 56.9% here, 54.8% nationally
  • Median graduation year2011 · the 1,200 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207P00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,829 NPPES records list emergency medicine physician (207P00000X) as their primary taxonomy with a practice address in Massachusetts: 26 per 100,000 residents against 21 nationally (50 states and D.C.). Boston has 543 of them (30%).

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. New Jersey1,754
  2. Virginia1,715
  3. Georgia1,685
  4. North Carolina2,094

States with a similar rate per 100,000

  1. Illinois26.2
  2. Hawaii25.8
  3. New York25.7
  4. Oregon25.5

The largest states

  1. California7,751
  2. New York5,025
  3. Texas4,885
  4. Florida4,034
  5. Pennsylvania3,911

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.