NPPES file of Aug 9, 2026

Emergency Medicine Physician in California

7,751 NPPES records list emergency medicine physician with a practice address in California, 20 per 100,000 residents, the 28th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 103 of 156.

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).

Los Angeles has the most, 632

  1. Los Angeles632
  2. San Diego496
  3. Sacramento369
  4. San Francisco289
  5. Oakland247

Emergency Medicine Physician records in California

  1. Charles Nixon, MDTwentynine Palms, CA 922781215912092
  2. Conrad Njamfa, MDFresno, CA 937201043977119
  3. Jeanne Noble, MDOakland, CA 946111649452822
  4. Nicole Noel, MDRancho Mirage, CA 922701821382052
  5. Hanne Noergaard, D.OPomona, CA 917671760434898
  6. Geary Noguchi, MDSacramento, CA 958251578641239
  7. Robert Nolan, MDCampbell, CA 950081982280731
  8. Mariko NomuraOakland, CA 946021376977298
  9. Gretchen Nonawzki, DOSacramento, CA 958251871159392
  10. Patrick Noone, M.D.San Francisco, CA 941091104830116
  11. David Noorvash, M.D.West Hollywood, CA 900481558755793
  12. Catherine Norbutas, MDSacramento, CA 958231275636383
  13. Sean Nordt, M.D.Los Angeles, CA 900331285802256
  14. Joyce Norman, M.D.Simi Valley, CA 930651043252059
  15. Robert Norris, M.D.Palo Alto, CA 943041124177928
  16. Robert Norris, MDSacramento, CA 958231265510937
  17. Riley North, MDCastro Valley, CA 945461316520224
  18. Charles Norton, MDEl Centro, CA 992431083677348
  19. Valerie Norton, MDSan Diego, CA 921031700829090
  20. Garrett Norvell, MDSolvang, CA 934631619135209
  21. Shlomo NoskowRancho Mirage, CA 922701720401474
  22. Erin Noste, MDSan Diego, CA 921031871732214
  23. Andrew Nothmann, MDOakland, CA 946021518949585
  24. Matthew Nottingham, MDStockton, CA 952041962993964
  25. Erin Noud, DOBanning, CA 922201710419346
  26. Mahmoud Nouh, M.D.Glendale, CA 912041699716191
  27. Nabil Noujaim, MDFontana, CA 923351942358924
  28. Cameron Nouri, MDBellflower, CA 907061639227663
  29. Doris Nourmand, MDWest Hollywood, CA 900481548215049
  30. Matthew Nowlis, M.D.San Pablo, CA 948061447270376
  31. Grant Nugent, M.D.Folsom, CA 956301750437026
  32. Jason Nunez, MDLos Angeles, CA 900331134860232
  33. Nabiha Nuruzzaman, MDSan Francisco, CA 941431396489498
  34. David Nwachukwu, MDGlendale, CA 912081376286120
  35. Victor Nwaenia, MDBellflower, CA 907061598832313
  36. Hilary Nwosu, M.D.Los Angeles, CA 900031255473625
  37. Christine O'Brien, MDSan Francisco, CA 941151134207772
  38. James O'Brien, MDSouth San Francisco, CA 940801780143024
  39. Merl O'Brien, M.D.Carmichael, CA 956081386687317
  40. Darragh O'Carroll, M.D.Los Angeles, CA 900331538421565
  41. Tara O'Connell, MDIrvine, CA 926041629245790
  42. Dennis O'Connor, M.D./M.P.H.National City, CA 919501508027863
  43. Michael O'Connor, MDSan Francisco, CA 941331326188228
  44. Michelle O'Connor, MDPasadena, CA 911051588155295
  45. Ryan O'Connor, M.D.Los Angeles, CA 900261821101635
  46. Emily O'DonnellStockton, CA 952041619648870
  47. Rachel O'Donnell, MDBakersfield, CA 933061982832036
  48. Timothy O'Kelley, D.O.Colton, CA 923241962788224
  49. Kathryn O'Neil, M.D.San Diego, CA 921341114280765
  50. Terence O'Neil, M.D.Long Beach, CA 908041528093267

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

California ranks 28 of 51 per resident

  1. Montana21
  2. Arizona20
  3. Kentucky20
  4. California20
  5. Virginia20
  6. North Carolina19
  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.

80.9% 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. California80.9%
  2. United States81.5%

Emergency Medicine Physician records in California, measured

  • In a Medicare file6,272 of 7,751 · 80.9% here, 81.5% nationally
  • In the CMS Doctors and Clinicians file4,561 · 58.8% here, 58.7% nationally
  • Not updated in five years or more4,610 · 59.5% here, 54.8% nationally
  • Median graduation year2011 · the 4,560 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

7,751 NPPES records list emergency medicine physician (207P00000X) as their primary taxonomy with a practice address in California: 20 per 100,000 residents against 21 nationally (50 states and D.C.). Los Angeles has 632 of them (8%).

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 York5,025
  2. Texas4,885
  3. Florida4,034
  4. Pennsylvania3,911

States with a similar rate per 100,000

  1. Virginia19.8
  2. Kentucky20.0
  3. Arizona20.1
  4. North Carolina19.3

The largest states

  1. New York5,025
  2. Texas4,885
  3. Florida4,034
  4. Pennsylvania3,911
  5. Illinois3,291

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.