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 25 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. George Nemeth, M.D.Harwich Port, MA 026461598850851
  2. Ira Nemeth, MDWorcester, MA 016551407823313
  3. Lauren Nentwich, MDBoston, MA 021181124299805
  4. Karin Netland, MD, MPHBrookline, MA 024451265542328
  5. Mark Newcomb, MDPlymouth, MA 023601609372382
  6. Stephanie Newsome, MDSpringfield, MA 011991659074516
  7. Valerie Ng, M.D.Cambridge, MA 021391265675722
  8. Hung Nguyen, M.D.Attleboro, MA 027031083728984
  9. Yan Ni, MDFramingham, MA 017021477619989
  10. Constance Nichols, MDWorcester, MA 016551619952264
  11. Ryan Nichols, M.D.Hyannis, MA 026011669906442
  12. Mark Nicoletti, M.D.Pittsfield, MA 012011427016013
  13. Valerie Nicoletti, M.D.Pittsfield, MA 012011902813587
  14. Agnieszka Nicora, MDSpringfield, MA 011071003080151
  15. David Nielsen, M.D.Amherst, MA 010021851410716
  16. John Nigro, MDNorwood, MA 020621578520086
  17. Heikki Nikkanen, MDBoston, MA 021151558376129
  18. Vicki Noble, MDBoston, MA 021141366433260
  19. Michael Noonan, M.D.Springfield, MA 011041588764542
  20. Alexandra Nordberg, MDWorcester, MA 016551871988139
  21. Jennifer Nordbye, DOSpringfield, MA 011071619670007
  22. Emily Norman, MDGreenfield, MA 013011780250142
  23. Joshua Norris, MDNeedham, MA 024921154957603
  24. Katherine Northern, MDBoston, MA 021181225086705
  25. Kathleen Northrup, M.D.Milford, MA 017571316984941
  26. Justyna Notargiacomo, MDCambridge, MA 021381740274620
  27. Richard Nunez, M.D.Fall River, MA 027201942248224
  28. Glenn Nuttall, MDBrockton, MA 023011568564136
  29. Kevin Nuttall, M.D.Maynard, MA 017541619103496
  30. Ruairi O Connor, MDWorcester, MA 016551568031318
  31. Colin O'Brien, M.D.Worcester, MA 016551538142708
  32. Daniel O'Brien, PA-CSouthborough, MA 017721689284366
  33. William O'Callahan, MDHolden, MA 015201114964186
  34. Michael O'Connell, D.OFalmouth, MA 025401093032427
  35. Laurel O'Connor, MDWorcester, MA 016551982099883
  36. Ryan O'HaraDorchester, MA 021241265810782
  37. Sean O'Hara, MDBoston, MA 021141023429370
  38. Erin O'Kula, MDWorcester, MA 016551154732352
  39. James O'Neill, D.O.Brockton, MA 023021871029645
  40. Mary Joan O'Neill, M.D.Milford, MA 017571861431959
  41. Margaret Oakland, M.D.East Boston, MA 021281548234362
  42. Erin Oakley, M.D.Boston, MA 021141245691146
  43. Elizabeth Obrien, MDWeymouth, MA 021901922454560
  44. Erica Ogle, D.O.Springfield, MA 011071962847459
  45. Andrew Old, M.D.Fall River, MA 027211184682718
  46. Peter Oldak, M.D.Clinton, MA 015101164404851
  47. Zachary Oliff, DOCambridge, MA 021391003300492
  48. Thiago Oliveira, M.D.Boston, MA 021151023471737
  49. Jonathan Olshaker, MDBoston, MA 021181346214400
  50. Ayobami Olufadeji, M.D.Boston, MA 022151396194726

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.