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 89 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. Julie Marquez, MDBellflower, CA 907061174671101
  2. Sergio Marquez, MDLoma Linda, CA 923541851967178
  3. Henry Marr, D.O.Moreno Valley, CA 925551962880435
  4. Robert Marsan, M.D.San Diego, CA 921011780766279
  5. Theresa Marsh, MDSalinas, CA 939011437459138
  6. Jared Marshall, MDLos Angeles, CA 900241932660610
  7. John Marshall, M.D.Orange, CA 928681346596970
  8. Margaret Marshall, M.D.Encinitas, CA 920241639170475
  9. Mark MarshallRosevill, CA 956611457595001
  10. Stacy MarshallSacramento, CA 958171871092213
  11. Reynalda Martel-Cazares, M.D.Riverside, CA 925051922442920
  12. Michael Martelli, D.O.Palm Springs, CA 922621306886304
  13. Vahe Martikian, MDRancho Mirage, CA 922701932895539
  14. Christopher Martin, M.D.Santa Monica, CA 904051871721191
  15. Christopher Martin, DOLoma Linda, CA 923541851096580
  16. David MartinOakland, CA 946021538587480
  17. John Martin, MDHanford, CA 932301861479362
  18. Michael Martin, MDWhittier, CA 906021740217447
  19. Rebeca Martin, MDCovina, CA 917231104313220
  20. Robert Martin, M.DMarysville, CA 949011205876208
  21. Rosalinda Martin, M.D.Baldwin Park, CA 917061356526982
  22. Ryan Martin, MDSan Francisco, CA 941101659734580
  23. Scott Martin, MDSan Diego, CA 921201265580211
  24. Jessica Martin Moreno, MDFresno, CA 937211912467754
  25. Claudia Martinez, MDInglewood, CA 903011881981769
  26. Cristina Martinez, M.D.Salinas, CA 939011477825784
  27. Dennis Martinez, MDSouth Lake Tahoe, CA 961501730169111
  28. Jesus Martinez, MDAtascadero, CA 934221144781832
  29. Jorge Martinez, D.O.National City, CA 919501922216795
  30. Kevin Martinez, MDLos Angeles, CA 900241780325993
  31. Luis MartinezLoma Linda, CA 923541205419900
  32. Mariana Martinez, MDLos Angeles, CA 900171053765693
  33. Nash Martinez, M.D.Riverside, CA 925051780038505
  34. Vicki Martinez, MDSan Rafael, CA 949031659444966
  35. Miguel Martinez-Romo, M.D.Sacramento, CA 958251366876823
  36. Bruce Marts, DOWalnut Creek, CA 945961679651707
  37. Michael Maruska, D.O.Huntington Beach, CA 926471659669018
  38. James Marvel, MDStanford, CA 943051558717983
  39. Jennifer Marvil, M.D.Los Angeles, CA 900331598054959
  40. Samantha Marx, MDSan Diego, CA 921031699574103
  41. Jerome Maryniuk, MDVentura, CA 930031548376916
  42. Karl Marzec, M.D.San Diego, CA 921231447520473
  43. Kevin Masek, M.D.San Mateo, CA 944031811280563
  44. Igor Mashchenko, MDPasadena, CA 911051699270884
  45. Lawrence Masket, MDPortola Valley, CA 940281093893877
  46. Clifford Masom, MDSan Diego, CA 921031942649470
  47. Jennifer Mason, MDAnaheim, CA 928041396828216
  48. Matthew Mason, MDSan Diego, CA 921031487116281
  49. Mina Masri, D.O.Los Alamitos, CA 907201750390993
  50. Samar Masri-Phillips, M.D.Glendale, CA 912041194767400

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.