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 25 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. Rupinder Chima, M.D.Sacramento, CA 958171902194855
  2. Brian Chin, MDLa Jolla, CA 920371770140782
  3. Eric Chin, MDSouth San Francisco, CA 940801750469383
  4. Michael Chin, MDSan Jose, CA 951281700824042
  5. Mike Chin, DOBakersfield, CA 933061548848534
  6. Rachel Chin, MDSan Francisco, CA 941101477597375
  7. Samantha Chin, M.DWalnut Creek, CA 945961588027569
  8. Stephen Chin, MDOakland, CA 946091760458954
  9. Steven Chin, MDWhittier, CA 906021952345019
  10. Daniel Ching, DOFresno, CA 937201669550794
  11. Michael Ching, MDSan Francisco, CA 941231124213541
  12. Courtney Chinn, MDStockton, CA 952041942889415
  13. Brian Chinnock, M.D.Fresno, CA 937211861481947
  14. Aliasgar ChinwalaModesto, CA 953561760612378
  15. Allen Chiou, M.D.Anaheim, CA 928011407291354
  16. Dugald Chisholm, M.D.Templeton, CA 934651912103284
  17. Evan Chisum, MDSacramento, CA 958191811037716
  18. Salil Chitnis, M.D.San Diego, CA 921231558652651
  19. Chun-Chieh Chiu, MDLos Angeles, CA 900341093863805
  20. Elaine Chiu, M.D.Madera, CA 936371972513794
  21. Jeff Chiu, D.O.San Jose, CA 951281104279348
  22. Joel ChiuSan Leandro, CA 945781295726446
  23. Kaela Chiu, M.D.Lynwood, CA 902621316208507
  24. Pao Chiu, M.D.Los Angeles, CA 900171285686592
  25. Silas Chiu, M.D.Fontana, CA 923351023370525
  26. Erica Chiu Liang, M.D.Stanford, CA 943051942498001
  27. Yi-Mei Chng, MDSanta Clara, CA 950511083791933
  28. Aaron Cho, D.O.Garden Grove, CA 928411164841482
  29. Elizabeth Cho, M.D.Walnut Creek, CA 945961124288238
  30. Thomas Cho, M.D.Loma Linda, CA 923541366620940
  31. Jonathan Chock, MDFontana, CA 923351770650624
  32. Bianca Choe, D.O.Los Angeles, CA 900951558758342
  33. Daniel Choi, MDOrange, CA 928681568982965
  34. Eunice Choi, RNSan Francisco, CA 941101053949503
  35. Heesun Choi, DOOrange, CA 928681396137337
  36. Jack Choi, M.D.Walnut Creek, CA 945961710186713
  37. Jimmy Choi, MDOakland, CA 946111316183965
  38. John Choi, DOBuena Park, CA 906211710447941
  39. Joseph Choi, MD, MPHLos Angeles, CA 900891902087497
  40. Michelle ChoiPasadena, CA 911051992267504
  41. Tony Choi, MDSanta Ana, CA 927041457388308
  42. Yun Choi, M.D.Los Angeles, CA 900331710358197
  43. Andrew ChonColton, CA 923241528563905
  44. John Chon, D.O.Covina, CA 917231184691644
  45. Florence Chong, DOSacramento, CA 958191295950160
  46. Ian Chong, M.D.San Diego, CA 921201063856177
  47. Randall Chong, M.DLaguna Hills, CA 926531124056387
  48. Carolyn Chooljian, MDFresno, CA 937211982656807
  49. David Chou, M.D.San Francisco, CA 941171942664578
  50. Jennifer Chou, M.D.Roseville, CA 956611033439104

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.