NPPES file of Aug 9, 2026

Specialist in California

5,749 NPPES records list specialist with a practice address in California, 15 per 100,000 residents, the 19th highest rate of 51. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 86 of 115.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Francisco has the most, 666

  1. San Francisco666
  2. Los Angeles301
  3. Sacramento241
  4. San Diego207
  5. Oakland198

Specialist records in California

  1. Marise Rodriguez, M.A.San Francisco, CA 941021649691163
  2. Mary RodriguezSan Jose, CA 951121154675783
  3. Neisa RodriguezGilroy, CA 950201124548110
  4. Peter Rodriguez, M.D.Novato, CA 949471033265079
  5. Diana Rodriguez DiazOakland, CA 946121831743400
  6. Sandra Rodriguez-CortezWalnut Creek, CA 945981306532692
  7. Jaziel Rodriguez-Lara, MDSylmar, CA 913421962989533
  8. James Roe, M.D.Los Angeles, CA 900171881685956
  9. Thomas Roe, M.D.09Los Angeles, CA 900361124166392
  10. John Roesler, M.D.Calabasas, CA 913021124037635
  11. Richard Roger, M.D.Rancho Mirage, CA 922701295009645
  12. David Rogers, M.D.Glendale, CA 912041770510513
  13. Edward Rogers, M.TLong Beach, CA 908071558714923
  14. Leif Rogers, MDBeverly Hills, CA 902121649276700
  15. Vance Roget, M.D.Modesto, CA 953551417976366
  16. Mary Rohan, M.D.Anaheim, CA 928011235211194
  17. Flora RojasRiverside, CA 925061285520577
  18. Hortensia Rojo, M.DEl Monte, CA 917331154680155
  19. Lisa RollfOntario, CA 917611497512248
  20. John Rollins, M.D.Los Gatos, CA 950321396791042
  21. Cheryl Rollins-AllenChino, CA 917101609168590
  22. Carmen Romano, D.P.T.Los Angeles, CA 900311124225735
  23. Neil Romanoff, M.D.West Hollywood, CA 900481437170107
  24. Daniel RomeWalnut Creek, CA 945981609573690
  25. Christina RomeroSan Francisco, CA 941221104269661
  26. Michael RomeroSanta Ana, CA 927011568913630
  27. Mary Romo, M.D.Bell, CA 902011861576480
  28. Amy Rondoni, OMTFairfield, CA 945341477210425
  29. Mitchell Ronning, R.P.T.Aptos, CA 950031518947464
  30. Dawn RonquilloModesto, CA 953501972448967
  31. Kenny Roosevelt, N/ASan Francisco, CA 941031710703087
  32. Oscar RosalesLong Beach, CA 908041568175016
  33. Santiago Rosales, COTracy, CA 953761164558771
  34. Mary RosasCosta Mesa, CA 926261174675243
  35. Denise RoseSan Francisco, CA 941021417221599
  36. Kayla RoseModesto, CA 953501972956035
  37. Marc Rose, M.D.San Diego, CA 921081851315063
  38. Renee Rose-Lynville, CASLotus, CA 956131174969232
  39. Lee Rosen, M.D.Santa Monica, CA 904041346295870
  40. Charles Rosenbaum, M.DSylmar, CA 913421134141518
  41. Michael RosenbaumOakland, CA 946051639226848
  42. Andrew Rosenberg, M.D.Burlingame, CA 941011841297207
  43. Bonnie Rosenberg, M.D.Menlo Park, CA 940251033274766
  44. Charles Rosenberg, M.D.Huntington Beach, CA 926481134212681
  45. Erika Rosenberg, M.D.Fortuna, CA 955401639275886
  46. Jeffrey Rosenberg, M.D.Los Angeles, CA 900171407906456
  47. Mario Rosenberg, M.D.Beverly Hills, CA 902111982635264
  48. Mark Rosenberg, M.D.Burlingame, CA 940101912098559
  49. Steven Rosenblatt, M.D.San Bernardino, CA 924111134142201
  50. Mary RosendoBakersfield, CA 933011689049769

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Massachusetts16
  2. West Virginia15
  3. Maryland15
  4. California15
  5. Minnesota15
  6. Delaware13
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

29.6% of these records appear in a Medicare file, against 17.0% 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. California29.6%
  2. United States17.0%

Specialist records in California, measured

  • In a Medicare file1,704 of 5,749 · 29.6% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file1,076 · 18.7% here, 11.1% nationally
  • Not updated in five years or more4,403 · 76.6% here, 77.3% nationally
  • Median graduation year1989 · the 1,075 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

5,749 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in California: 15 per 100,000 residents against 18 nationally (50 states and D.C.). San Francisco has 666 of them (12%).

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. Florida2,685
  2. Washington2,609
  3. Pennsylvania2,031
  4. Texas1,716

States with a similar rate per 100,000

  1. Minnesota14.6
  2. Maryland15.2
  3. West Virginia15.4
  4. Massachusetts15.7

The largest states

  1. New York22,636
  2. Florida2,685
  3. Washington2,609
  4. Pennsylvania2,031
  5. Texas1,716

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.