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 145 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. Fred Volinsky, M.D.San Francisco, CA 941111699890541
  2. Bryce Volk, MDSan Jose, CA 951161194285080
  3. Anna Von Reinhart, M.D.Fresno, CA 937211528326477
  4. Carl Von Trampe, MDHarbor City, CA 907101497953244
  5. Matthew Von Zimmerman, DOOceanside, CA 920551154998839
  6. Christy VongStockton, CA 952041326668534
  7. Vinson Vong, MDRiverside, CA 925011164050043
  8. Hurnan Vongsachang, MD, MPH, MSLos Angeles, CA 900341558824896
  9. Marcus Voth, M.DRiverside, CA 925011922114107
  10. John Vowels, MDSanta Barbara, CA 931051518910496
  11. Charles Vu, MDSacramento, CA 958171417185166
  12. Christopher Vu, MDSanta Barbara, CA 931051952363103
  13. Ha Vu, MDLos Angeles, CA 900421346542586
  14. Hung Vu, MDLa Mesa, CA 919421487795811
  15. Jerome Vu, M.D.Bakersfield, CA 933011811213267
  16. Katherine Vuchkov, MDFresno, CA 937211336671544
  17. Peter Vuong, DOModesto, CA 953561881261667
  18. Ashley Vuong-Goldshear, MDLos Angeles, CA 900951821592668
  19. Kris Vutpakdi, MDBaldwin Park, CA 917061225105174
  20. Dhrumil VyasWalnut Creek, CA 945961700345006
  21. Myron Wacholder, M.DLaguna Hills, CA 926531952339632
  22. Jeffrey Wade, MDDuarte, CA 910101093773616
  23. Anthony Waechter, MDWalnut Creek, CA 945961811075922
  24. Andrea Wagner, MDSan Francisco, CA 941151356429955
  25. David Wagner, M.D.Los Angeles, CA 900151326090556
  26. David Wagner, M.D.Santa Cruz, CA 950651881038925
  27. Jonathan Wagner, M.D.Downey, CA 902411629274287
  28. Justin Wagner, M.D.Folsom, CA 956301306051362
  29. Richard Wagner, M.D.Oxnard, CA 930301316988561
  30. Samuel Wagner, M.D.San Francisco, CA 941101083148936
  31. Wahidullah Wahidullah, M.D.Eureka, CA 955011083640213
  32. Christina Wainwright, M.D.Fullerton, CA 928351770790859
  33. Jeffrey Wajda, DOSacramento, CA 958171639127954
  34. Richard Wakamiya, MDSacramento, CA 958231154409886
  35. Meredith Waldon, MBBSWalnut Creek, CA 945961669714846
  36. Vijay Wali, MDAnaheim, CA 928011215970389
  37. Anne Walker, M.D.Stanford, CA 943051629462619
  38. Christopher Walker, MDOakland, CA 946021649469701
  39. Colin Walker, M.D.Ojai, CA 930231467729376
  40. Graham Walker, M.D.Stanford, CA 943051093951949
  41. Lindsay Walker, MDBerkeley, CA 947041679063499
  42. Morgan Walker, MDGlendale, CA 912041538746664
  43. Rebecca Walker, MDStanford, CA 943051740458652
  44. Scott Walker, MDFontana, CA 923351093863920
  45. Errika Walker-Magra, M.D.San Diego, CA 921341235166950
  46. John Wall, MDPanorama City, CA 914021528116464
  47. Christopher Wallace, M.D.Vallejo, CA 945891871520015
  48. Hannah Wallace, MD, MPHLos Angeles, CA 900951447646161
  49. Roger Wallace, M.D.Valencia, CA 913551083645501
  50. Victor Wallenkampf, M.D.Eureka, CA 955011740242452

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.