NPPES file of Aug 9, 2026

Internal Medicine Physician in California

17,696 NPPES records list internal medicine physician with a practice address in California, 45 per 100,000 residents, the 17th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 41 of 354.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · 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, 1,423

  1. Los Angeles1,423
  2. San Francisco1,318
  3. San Diego961
  4. Sacramento601
  5. Oakland432

Internal Medicine Physician records in California

  1. Daryl Burgess, D.O.Santa Barbara, CA 931101104931575
  2. Julie Burgos, DOSan Diego, CA 921201497803480
  3. Catherine Burke, MDSan Francisco, CA 941431831622091
  4. Jasmine Burke, M.D.Menlo Park, CA 940251134257678
  5. Patrick Burke, M.D.Madera, CA 936361942456165
  6. Chris Burkhart, M.D.Sunol, CA 945861639176308
  7. Lisanne Burkholder, MD FACP FRACPTruckee, CA 961611124338116
  8. Farzauq Burki, MDPasadena, CA 911051609154749
  9. Samuel Burklow, M.D.Fresno, CA 937201669499695
  10. Christopher Burn, M.D.Palo Alto, CA 943011740395672
  11. Shane Burnette, MDFresno, CA 937011619554037
  12. Kevin Burnham, M.D.Sacramento, CA 958171043454838
  13. Kenneth Burns, MDLos Angeles, CA 900271427125319
  14. Robert Burns, MDMountain View, CA 940431558334623
  15. Ansen BurrRedwood City, CA 940631487404612
  16. Bill Burr, MDSacramento, CA 958251720164254
  17. Arun BurraStanford, CA 943051396485025
  18. Greg Burrell, M.D.San Francisco, CA 941111699090530
  19. Krista Burris, MDRancho Mirage, CA 922701992836290
  20. Adrienne Burrows, MDSanta Monica, CA 904041649347667
  21. Darrell Burstein, M.D.Beverly Hills, CA 902101811079445
  22. Samuel BursteinCalabasas, CA 913021124037155
  23. Stuart Bursten, M.D.Vista, CA 920841164494696
  24. Charles Burstin, M.D.Los Angeles, CA 900481164592556
  25. Carl Burton, MDLos Angeles, CA 900951760873665
  26. Ronald Burton, MDSan Bernardino, CA 924041225008006
  27. Bhuvaneswari Burugapalli, M.D.Folsom, CA 956301518127695
  28. Lauren Burwell, M.D.Los Angeles, CA 900121649464710
  29. Jonathan BusamWest Hollywood, CA 900481568159580
  30. Andrew Busby, MDSan Diego, CA 921201356418115
  31. Darin Buschmann, M.D.Northridge, CA 913241558381004
  32. Gabriella BuscoSan Jose, CA 951281043062821
  33. Brian Bush, DOSan Bernardino, CA 924041255893285
  34. Ronald Bush, MDIndian Wells, CA 922101851366843
  35. Swaroopa Bussa, MDSan Jose, CA 951381003994856
  36. Andres BustamanteChula Vista, CA 919101720199227
  37. Chen-Ping Butler, MD, MPHSan Francisco, CA 941111487277679
  38. Daniel Butler, M.D.San Francisco, CA 941151013320738
  39. Lisa ButlerPomona, CA 917671003885302
  40. Richard Butlig, MDTorrance, CA 905011912968447
  41. Asra ButtLos Angeles, CA 900271356875991
  42. Vinay Buttan, MDPorterville, CA 932571699840728
  43. Zara Butte, MDSouth San Francisco, CA 940801811630049
  44. Christopher Buttelman, MDNorthridge, CA 913251437128840
  45. Karen Butterfield, M.D.Palo Alto, CA 943011619083144
  46. Melissa Butts, D.O.Roseville, CA 956611790945756
  47. Richard Buxton, MDSan Jose, CA 951191629156294
  48. Richard Buyalos, MDLos Angeles, CA 900951720012123
  49. Robert Byers, M.D.Santa Barbara, CA 931051891837480
  50. Kristina Byers-Spencer, MDSan Diego, CA 921301487233250

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 17 of 51 per resident

  1. New Jersey50
  2. New Hampshire48
  3. Minnesota46
  4. California45
  5. Florida45
  6. Ohio45
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.5% of these records appear in a Medicare file, against 78.7% 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. California79.5%
  2. United States78.7%

Internal Medicine Physician records in California, measured

  • In a Medicare file14,068 of 17,696 · 79.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file11,077 · 62.6% here, 61.4% nationally
  • Not updated in five years or more10,832 · 61.2% here, 55.4% nationally
  • Median graduation year2004 · the 11,065 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17,696 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in California: 45 per 100,000 residents against 44 nationally (50 states and D.C.). Los Angeles has 1,423 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 York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300

States with a similar rate per 100,000

  1. Minnesota45.9
  2. Ohio44.8
  3. New Hampshire48.0
  4. Maine42.8

The largest states

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300
  5. Illinois7,238

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.