NPI Central

Hydroxychloroquine (Plaquenil) Prescribers in California

Ranked by documented Medicare Part D claim volume (2024).

1,878 providers in California have Medicare Part D claims for hydroxychloroquine. Ordering reflects documented Part D claim volume — a transparency signal, not a quality or "best" ranking. Open any provider for their full profile and what they prescribe under Medicare.

Prescribers in CA
1,878
Data year
2024
Registry vintage
June 2026

hydroxychloroquine prescribers in California

Ranked by Part D claim volume.
  1. 1

    Rheumatology Physician · La Palma, CA

    1,818 Medicare Part D claims (2024)

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  2. 2

    Internal Medicine Physician · Tarzana, CA

    1,374 Medicare Part D claims (2024)

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  3. 3

    Rheumatology Physician · Apple Valley, CA

    1,328 Medicare Part D claims (2024)

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  4. 4

    Rheumatology Physician · San Diego, CA

    1,293 Medicare Part D claims (2024)

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  5. 5

    Rheumatology Physician · Modesto, CA

    1,273 Medicare Part D claims (2024)

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  6. 6

    Rheumatology Physician · Irvine, CA

    1,227 Medicare Part D claims (2024)

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  7. 7

    Rheumatology Physician · Bakersfield, CA

    1,215 Medicare Part D claims (2024)

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  8. 8

    Rheumatology Physician · Arcadia, CA

    1,104 Medicare Part D claims (2024)

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  9. 9

    Rheumatology Physician · Tracy, CA

    1,076 Medicare Part D claims (2024)

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  10. 10

    Rheumatology Physician · San Bernardino, CA

    1,031 Medicare Part D claims (2024)

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  11. 11

    Allergy & Immunology Physician · Stockton, CA

    1,016 Medicare Part D claims (2024)

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  12. 12

    Rheumatology Physician · La Quinta, CA

    925 Medicare Part D claims (2024)

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  13. 13

    Rheumatology Physician · Madera, CA

    918 Medicare Part D claims (2024)

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  14. 14

    Gastroenterology Physician · Los Angeles, CA

    880 Medicare Part D claims (2024)

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  15. 15

    Specialist · Riverside, CA

    861 Medicare Part D claims (2024)

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  16. 16

    Rheumatology Physician · Tujunga, CA

    828 Medicare Part D claims (2024)

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  17. 17

    Rheumatology Physician · Manteca, CA

    828 Medicare Part D claims (2024)

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  18. 18

    Rheumatology Physician · San Bernardino, CA

    799 Medicare Part D claims (2024)

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  19. 19

    Rheumatology Physician · San Pedro, CA

    766 Medicare Part D claims (2024)

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  20. 20

    Rheumatology Physician · Modesto, CA

    735 Medicare Part D claims (2024)

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  21. 21

    Physician Assistant · Cerritos, CA

    731 Medicare Part D claims (2024)

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  22. 22

    Rheumatology Physician · Tustin, CA

    724 Medicare Part D claims (2024)

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  23. 23

    Internal Medicine Physician · Los Angeles, CA

    705 Medicare Part D claims (2024)

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  24. 24

    Rheumatology Physician · Mission Hills, CA

    705 Medicare Part D claims (2024)

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  25. 25

    Rheumatology Physician · San Marcos, CA

    701 Medicare Part D claims (2024)

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  26. 26

    Rheumatology Physician · Sacramento, CA

    700 Medicare Part D claims (2024)

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  27. 27

    Rheumatology Physician · Carmichael, CA

    691 Medicare Part D claims (2024)

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  28. 28

    Rheumatology Physician · Covina, CA

    675 Medicare Part D claims (2024)

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  29. 29

    Family Nurse Practitioner · Victorville, CA

    659 Medicare Part D claims (2024)

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  30. 30

    Rheumatology Physician · Cameron Park, CA

    658 Medicare Part D claims (2024)

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  31. 31

    Internal Medicine Physician · Los Angeles, CA

    619 Medicare Part D claims (2024)

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  32. 32

    Rheumatology Physician · Bakersfield, CA

    617 Medicare Part D claims (2024)

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  33. 33

    Rheumatology Physician · Los Angeles, CA

    616 Medicare Part D claims (2024)

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  34. 34

    Rheumatology Physician · Placentia, CA

    602 Medicare Part D claims (2024)

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  35. 35

    Rheumatology Physician · Apple Valley, CA

    590 Medicare Part D claims (2024)

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  36. 36

    Rheumatology Physician · Roseville, CA

    588 Medicare Part D claims (2024)

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  37. 37

    Family Nurse Practitioner · Bakersfield, CA

    584 Medicare Part D claims (2024)

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  38. 38

    Rheumatology Physician · Mission Viejo, CA

    578 Medicare Part D claims (2024)

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  39. 39

    Rheumatology Physician · Santa Rosa, CA

    563 Medicare Part D claims (2024)

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  40. 40

    Rheumatology Physician · Woodland, CA

    557 Medicare Part D claims (2024)

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  41. 41

    Rheumatology Physician · Fontana, CA

    552 Medicare Part D claims (2024)

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  42. 42

    Rheumatology Physician · Walnut Creek, CA

    548 Medicare Part D claims (2024)

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  43. 43

    Rheumatology Physician · Los Angeles, CA

    545 Medicare Part D claims (2024)

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  44. 44

    Rheumatology Physician · Glendale, CA

    543 Medicare Part D claims (2024)

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  45. 45

    Rheumatology Physician · Fresno, CA

    540 Medicare Part D claims (2024)

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  46. 46

    Rheumatology Physician · Culver City, CA

    532 Medicare Part D claims (2024)

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  47. 47

    Rheumatology Physician · Merced, CA

    514 Medicare Part D claims (2024)

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  48. 48

    Internal Medicine Physician · Mission Viejo, CA

    512 Medicare Part D claims (2024)

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  49. 49

    Rheumatology Physician · Modesto, CA

    506 Medicare Part D claims (2024)

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  50. 50

    Rheumatology Physician · Riverside, CA

    505 Medicare Part D claims (2024)

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Medicare Part D only. Counts and ordering reflect Medicare Part D claims (2024) from CMS — they exclude cash-pay, commercial, and Medicaid prescriptions and undercount cash-pay categories (e.g. GLP-1 weight-loss, testosterone). Not a quality or "best" ranking. Absence does not mean a provider does not prescribe hydroxychloroquine. Source: CMS NPPES (June 2026).