NPPES file of Aug 9, 2026

Anesthesiology Physician in California

7,571 NPPES records list anesthesiology physician with a practice address in California, 19 per 100,000 residents, the 18th 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 86 of 152.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207L00000X · 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, 762

  1. Los Angeles762
  2. San Diego686
  3. San Francisco499
  4. Sacramento396
  5. Stanford387

Anesthesiology Physician records in California

  1. Sabrina Martinez, MDWalnut Creek, CA 945961366516643
  2. Natalia Martinez Acero, MDStanford, CA 943051639304751
  3. Hector Martinez-Wilson, MD, PHDEscondido, CA 920291013234251
  4. Adrian Marty, M.D.Stanford, CA 943051154862472
  5. Mary Maruszak, D.O.Camp Pendleton, CA 920551629380373
  6. Rakesh Marwah, MDStanford, CA 943051053508655
  7. Yolanda Marzan, MDSan Diego, CA 921231891845541
  8. Joseph Masbad, MDSan Diego, CA 921201619184918
  9. Carin Mascetti, M.D.Loma Linda, CA 923541235417346
  10. Esther MasilamonyPalmdale, CA 935511801465638
  11. Johnathan Maskin, M.D.Pasadena, CA 911051386668366
  12. Daniel Masluk, M.D.Napa, CA 945581619906708
  13. Adam Mason, D.O.Anaheim, CA 926971760740526
  14. Linda Mason, M.D.Loma Linda, CA 923541932121761
  15. Dylan Masters, MDSan Francisco, CA 941221215399589
  16. Daniel Mastriano, MDWest Hollywood, CA 900481437645199
  17. Zdenka Mateev, M.D., INC.Hemet, CA 925431336285881
  18. Cynthia Mateo, M.D.Los Angeles, CA 900671861724189
  19. Rima Matevosian, M.D.Sylmar, CA 913421407930761
  20. Bobby Mathew, MDSan Jose, CA 951281821290255
  21. Brett Mathieson, MDMarysville, CA 959011538112339
  22. Amitabh Mathur, MDHollister, CA 950231932173986
  23. Surbhi Mathur, MDWest Hills, CA 913071144563206
  24. Edwin Matias, M.D.Los Angeles, CA 900571962431247
  25. Oana Maties, MDSan Francisco, CA 941431346565074
  26. Kaveh Matin, M.D.Orange, CA 928681457371346
  27. Lisa Matos, M.D.Los Angeles, CA 900331245491869
  28. Hmayak Matossian, M.D.Arcadia, CA 910071801810536
  29. Michael MatsonSacramento, CA 958171912963950
  30. Teresita Matsunaga, M.D.Encino, CA 914361073575445
  31. Jillian Matsuoka, D.O.Castro Valley, CA 945461538788724
  32. Eli MatthewsOxnard, CA 930301386819118
  33. Mylene Matti, M.D.Pasadena, CA 911011134181506
  34. Kathy Maurer, MDLos Gatos, CA 950321114337656
  35. Timothy Maus, M.D.San Diego, CA 921031871658484
  36. Orestes Mavrothalassitis, MDSan Francisco, CA 941431265937205
  37. William Maxwell, M.D.San Diego, CA 921231619948031
  38. Laura May, MDStanford, CA 943051558705392
  39. Randal May, MDTulare, CA 932741851335426
  40. Salomon Maya, MDOrange, CA 928681528194909
  41. William Mayeda, M.D.Greenbrae, CA 949041265526230
  42. Laura Mayer, M.D.Los Angeles, CA 900951043536378
  43. Barnett Mayerson, MDPanorama City, CA 914021649347576
  44. Douglas Mayfield, MDLos Angeles, CA 900361174636245
  45. Scott Mayfield, MDOrange, CA 928681679649156
  46. Peter Mazanec, M.D.West Hollywood, CA 900481598296105
  47. Mervyn Maze, MB, CHBSan Francisco, CA 941431619272317
  48. Nourah Mazid, D.O.Madera, CA 936361407292329
  49. Richard Mazze, M.D.Palo Alto, CA 943041043393390
  50. William Mazzei, MDSan Diego, CA 921031467492165

Source: CMS NPPES, primary taxonomy 207L00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 18 of 51 per resident

  1. Montana20
  2. Arizona20
  3. Utah20
  4. California19
  5. Pennsylvania19
  6. Missouri19
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 207L00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

71.3% of these records appear in a Medicare file, against 73.7% 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. California71.3%
  2. United States73.7%

Anesthesiology Physician records in California, measured

  • In a Medicare file5,396 of 7,571 · 71.3% here, 73.7% nationally
  • In the CMS Doctors and Clinicians file4,872 · 64.4% here, 67.2% nationally
  • Not updated in five years or more4,767 · 63.0% here, 57.8% nationally
  • Median graduation year2006 · the 4,868 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207L00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

7,571 NPPES records list anesthesiology physician (207L00000X) as their primary taxonomy with a practice address in California: 19 per 100,000 residents against 18 nationally (50 states and D.C.). Los Angeles has 762 of them (10%).

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 York5,062
  2. Texas4,635
  3. Florida3,375
  4. Illinois2,575

States with a similar rate per 100,000

  1. Utah19.6
  2. Pennsylvania19.1
  3. Arizona19.8
  4. Montana20.0

The largest states

  1. New York5,062
  2. Texas4,635
  3. Florida3,375
  4. Illinois2,575
  5. Pennsylvania2,481

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.