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 64 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. Michelle IwakiPomona, CA 917671700176229
  2. Samantha Izuno, MDPalo Alto, CA 943041093394918
  3. Joseph IzzoFrench Camp, CA 952311720474729
  4. Aileen Jaber, MDVacaville, CA 956881497807614
  5. Alex Jabourian, D.O.Colton, CA 923241740691195
  6. Nina JabourianColton, CA 923241609287044
  7. Anna Jackanich, MDLos Angeles, CA 900331659907582
  8. Martin Jackier, M.D.La Jolla, CA 920371376886622
  9. Amanda Jackson, MDVacaville, CA 956881386141844
  10. Anthony Jackson, MDFolsom, CA 956301720024847
  11. Helen Jackson, M.D.Berkeley, CA 947041598815938
  12. Jason Jackson, MDSelma, CA 936621316907298
  13. Jerilyn Jackson, M.D.Santa Rosa, CA 954011962446575
  14. Joseph Jackson, MDTorrance, CA 905021437808870
  15. Lenley Jackson, M.D.Stockton, CA 952091568555845
  16. Megan Jackson, MDEl Centro, CA 922431154958437
  17. Melvin Jackson, MDLos Angeles, CA 900171922049295
  18. Tyler Jackson, MDSanta Monica, CA 904041295355816
  19. Julie Jacob, MDInglewood, CA 903011881864890
  20. Joshua Jacober, MDSanta Rosa, CA 954031770043176
  21. James Jacobs, M.D., PH.D.Stanford, CA 943051346480308
  22. Russell Jacobs, M.D.San Diego, CA 921231831167485
  23. Scott Jacobs, M.D.Los Angeles, CA 900731265483226
  24. Brent Jacobsen, D.OWildomar, CA 925951790890465
  25. Eric Jacobsen, M.D.San Luis Obispo, CA 934011568405603
  26. Jerry Jacobson, M.D.Visalia, CA 932771285644617
  27. Irving Jacoby, MDLa Jolla, CA 920371184669178
  28. Sami Jadallah, MDSan Jose, CA 951281871521799
  29. Reza Jadvar, MDLos Angeles, CA 900271710035506
  30. Steven Jaeger, M.D.La Mesa, CA 919421548270564
  31. Wyatt Jaffe, MDSan Andreas, CA 952491649293119
  32. Zan Jafry, M.D.Loma Linda, CA 923541770920639
  33. Rochelle Jagdeo, M.D.Placerville, CA 956671134530108
  34. Kayla Jagoda, MDLos Angeles, CA 900331700317740
  35. Sundip Jagpal, MDSanta Clara, CA 950511831558261
  36. Christian Jagusch, MDOrange, CA 928681952445579
  37. Sasan Jahan-Parwar, MDHarbor City, CA 907101043368913
  38. Aarti Jain, M.D.Los Angeles, CA 900171285032615
  39. Arun Jain, MDOakdale, CA 953611588691489
  40. Ashika Jain, M.D.San Francisco, CA 941101639222672
  41. Ashokkumar JainLos Angeles, CA 900331558416792
  42. Sushil Jain, M.D., M.B.A.Los Angeles, CA 900341093150476
  43. Colin Jairam, MDSan Clemente, CA 926731821272295
  44. Halsey JakleBakersfield, CA 933061497153860
  45. Christopher Jaksa, MDWalnut Creek, CA 945961619055779
  46. Nima JalaliNational City, CA 919501144603358
  47. Sara Jalali, M.D.San Jose, CA 951191306161948
  48. Ali Jamehdor, D.OColton, CA 923241528009008
  49. Reza Jamehdor, M.D.Los Angeles, CA 900331629211669
  50. Laurie James, DOHarbor City, CA 907101265609341

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.