NPPES file of Aug 9, 2026

Rheumatology Physician in California

926 NPPES records list rheumatology physician with a practice address in California, 2.4 per 100,000 residents, the 20th 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 3 of 19.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RR0500X · 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, 93

  1. Los Angeles93
  2. San Francisco64
  3. San Diego42
  4. Sacramento27
  5. Stanford25

Rheumatology Physician records in California

  1. Maria Susan Buhay-Maglunog, M.D.West Covina, CA 917901699744524
  2. Caroline BuiOrange, CA 928681821626482
  3. Viet Bui, MD, PHDTorrance, CA 905021396092227
  4. H BukiriLos Angeles, CA 900951952765026
  5. Ken Bulpitt, MDLos Angeles, CA 900951619902764
  6. Jennifer Burkham, MDSan Jose, CA 951281174670350
  7. Doreen Burks, M.D.Goleta, CA 931111548322266
  8. Thomas Burns, MDSanta Clara, CA 950511235216169
  9. Swapna Busa, M.DEl Cajon, CA 920201841592763
  10. Thomas Bush, MDSan Jose, CA 951281821061334
  11. Dahlia Carr, MDBeverly Hills, CA 902111356368930
  12. Patrick Carroll, MDRoseville, CA 956611114005857
  13. Dennis Carson, MDLa Jolla, CA 920931447681531
  14. Nancy Carteron, M.D.San Francisco, CA 941151669582458
  15. Janelle Castellino, MD, PHARMDLos Angeles, CA 900951851716039
  16. James Castles, M.D.Davis, CA 956161477623403
  17. Hernan Castro-Rueda, M.D.Mission Viejo, CA 926911720162092
  18. Milena Cavalcante, M. D.Fowler, CA 936251225453467
  19. Arnoldas Ceponis, MDLa Jolla, CA 920371144423039
  20. Brendan Cerk, MDLos Angeles, CA 900171558716357
  21. Anupam Chahal, MDManteca, CA 953371972780146
  22. Yashaar Chaichian, MDStanford, CA 943051174788103
  23. Andrew Chan, M.D.San Francisco, CA 941431578667028
  24. Happy ChanDavis, CA 956161740409218
  25. Virginia Chan, MDBellflower, CA 907061891847273
  26. Amy Chang, MDRiverside, CA 925051255490827
  27. Ian Chang, D.O.Orange, CA 928681407116411
  28. Juliana ChangDowney, CA 902421801239009
  29. Parke Chang, MDAnaheim, CA 928071013122605
  30. Jeannie Chao, M.DSan Diego, CA 921031962600015
  31. Geeta Chaparala, MDYuba City, CA 959911750562054
  32. Samar Charabaty, M.D.Gilroy, CA 950201467603365
  33. Christina Charles-Schoeman, MDLos Angeles, CA 900741467486993
  34. May Chatila, M.D.Santa Monica, CA 904041144253535
  35. Neha ChaurasiaOrange, CA 928681457980211
  36. Natalia Chavez Stewart, M.D.Corona, CA 928791235278250
  37. Gurtej Cheema, M.D.Davis, CA 956161578546578
  38. Christina Chen, DOCovina, CA 917221952661829
  39. Emy Chen, MDArcadia, CA 910061689741910
  40. Minzi Chen, MDWoodland, CA 956951922269067
  41. Michael Cheng, DOOrange, CA 928681003109513
  42. David Chernoff, MDSan Rafael, CA 949011164759312
  43. Purva Chhibar, M.D.Temecula, CA 925921710390844
  44. Suneeta Chhugani, MDSonora, CA 953701750469664
  45. Joseph Chiapella, MDChico, CA 959261255374252
  46. William Chin, M.D.Torrance, CA 905021790995769
  47. Kristal Choi, M.D.Santa Monica, CA 904041396165882
  48. Soo Choi, M.D.San Diego, CA 921031396997946
  49. Penny Chong, M.D.Agoura Hills, CA 913011093937112
  50. Benedict Chou, M.D.San Francisco, CA 941151770759375

Source: CMS NPPES, primary taxonomy 207RR0500X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 20 of 51 per resident

  1. Missouri2.4
  2. Oregon2.4
  3. South Carolina2.4
  4. California2.4
  5. Nebraska2.3
  6. New Mexico2.3
  7. 50 states and D.C.2.4

Source: CMS NPPES, primary taxonomy 207RR0500X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

81.3% of these records appear in a Medicare file, against 81.6% 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. California81.3%
  2. United States81.6%

Rheumatology Physician records in California, measured

  • In a Medicare file753 of 926 · 81.3% here, 81.6% nationally
  • In the CMS Doctors and Clinicians file643 · 69.4% here, 69.5% nationally
  • Not updated in five years or more571 · 61.7% here, 56.6% nationally
  • Median graduation year2003 · the 641 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RR0500X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

926 NPPES records list rheumatology physician (207RR0500X) as their primary taxonomy with a practice address in California: 2.4 per 100,000 residents against 2.4 nationally (50 states and D.C.). Los Angeles has 93 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 York599
  2. Texas545
  3. Florida494
  4. Pennsylvania413

States with a similar rate per 100,000

  1. South Carolina2.4
  2. Oregon2.4
  3. Nebraska2.3
  4. New Mexico2.3

The largest states

  1. New York599
  2. Texas545
  3. Florida494
  4. Pennsylvania413
  5. Massachusetts343

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.