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 90 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. Stacey Massignan, M.D.Santa Rosa, CA 954051801155056
  2. Artin Massihi, M.D.Bakersfield, CA 933121104911403
  3. Ronald Masson, M.D.Stanford, CA 943051568738904
  4. Bobby Massoudian, MDLong Beach, CA 908061891734349
  5. Martha Masters, MDStanford, CA 943051972948222
  6. Clinton Masterson, M.D.South Lake Tahoe, CA 961501407067168
  7. Scott Mataoa, M.D.National City, CA 919501932362340
  8. Antony Mathew, M.D.Vallejo, CA 945891184156010
  9. Rhea Mathew, MDTorrance, CA 905051639759111
  10. Jason Mathews, DOChino, CA 917101316353865
  11. Reshma Mathews, DOOakland, CA 946191417363318
  12. Zara Mathews, M.D.San Mateo, CA 944031124300652
  13. Kelly Mathison, M.D.Sacramento, CA 958251528301686
  14. Yuliya Matolina, DOColton, CA 923241942867809
  15. Danielle Matonis, MDOrange, CA 928681326542168
  16. Anthony Matthews, MDAnaheim, CA 928071154498095
  17. Daniel Matulich, M.D.Santa Rosa, CA 954051043254600
  18. Adam Mauricio, MDRoseville, CA 956611477304350
  19. Ian Paolo MauricioOrange, CA 928681316696461
  20. David Maurier, MDMather, CA 956551992209183
  21. Preston Maxim, MDSan Francisco, CA 941101427090042
  22. Stuart Maxwell, MDFresno, CA 937211255352001
  23. Rachel May, M.D.Arroyo Grande, CA 934201609810209
  24. Richard MayLos Angeles, CA 900071326139320
  25. Sara May, MDTorrance, CA 905051457377707
  26. Spencer MaySacramento, CA 958171679222137
  27. Matthew Maynard, DOSacramento, CA 958171366978199
  28. Lawrence Mazur, DORiverside, CA 925051518015585
  29. Vicki Mazzorana, M.DMountain View, CA 940401609821180
  30. Jack Mazzulo, MDLos Angeles, CA 900891518511690
  31. Gary Mc Calla, M.D.Santa Rosa, CA 954051669416285
  32. Mark Mc Cartin, MDLos Angeles, CA 900271598804296
  33. James Mc Keith, M.D.Santa Rosa, CA 954051033153267
  34. Gary Mc Larty, MDFontana, CA 923351831247741
  35. Corey Mc Leod, MDSouth Lake Tahoe, CA 961501679621619
  36. Elton McAmis, MDBerkeley, CA 947051366400640
  37. Brian McBeth, MDSan Francisco, CA 941101811962475
  38. Christine McBeth, D.O.Sacramento, CA 958171558772798
  39. Sharon McBeth, M.D.Beverly Hills, CA 902111699908806
  40. Cheryl McBride, DOSan Jose, CA 951281912188632
  41. Owen McBride, MDOakland, CA 946021831620905
  42. Kerry McCabe, D.O.Sherman Oaks, CA 914231578747093
  43. Skeet McCain, M.D.Santa Monica, CA 904041578508537
  44. John McCall, M.D.San Pedro, CA 907321982636262
  45. William McCallum, MDTravis Afb, CA 945351831658806
  46. Chad McCarthy, CHAD MCCARTHYOakland, CA 946021629307756
  47. Keith McCarty, M.D.Pomona, CA 917671538171426
  48. Troy McCarty, DOOrange, CA 928681477118784
  49. Zachary McCarty, MDLoma Linda, CA 923541538665690
  50. Richard McCauley, MDLa Palma, CA 906231538102587

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.