NPI Central

Pantoprazole (Protonix) Prescribers in California

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

27,292 providers in California have Medicare Part D claims for pantoprazole. 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
27,292
Data year
2024
Registry vintage
June 2026

pantoprazole prescribers in California

Ranked by Part D claim volume.
  1. 1
    Abbas HasnainM.D., J.D.

    Internal Medicine Physician · Fresno, CA

    2,833 Medicare Part D claims (2024)

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  2. 2
    William BichaiM.D.

    Nephrology Physician · Bakersfield, CA

    2,322 Medicare Part D claims (2024)

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  3. 3
    Rajeev KrishanMD

    Specialist · Bakersfield, CA

    2,303 Medicare Part D claims (2024)

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  4. 4
    Razmik OhanjanianMD

    Cardiovascular Disease Physician · Glendale, CA

    2,228 Medicare Part D claims (2024)

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  5. 5
    Todd FarrerM.D.

    Family Medicine Physician · Bakersfield, CA

    1,779 Medicare Part D claims (2024)

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  6. 6
    Asha Pritpal SidhuMD

    Internal Medicine Physician · Fresno, CA

    1,654 Medicare Part D claims (2024)

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  7. 7
    Mary Gessner-PetersonDO

    Emergency Medical Services (Emergency Medicine) Physician · Alpine, CA

    1,626 Medicare Part D claims (2024)

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  8. 8
    Ronald PhilippD.O.

    Geriatric Medicine (Family Medicine) Physician · Long Beach, CA

    1,586 Medicare Part D claims (2024)

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  9. 9
    Michael DaoM.D.

    Internal Medicine Physician · Garden Grove, CA

    1,531 Medicare Part D claims (2024)

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  10. 10
    Henrik KhatchatourianMD

    Family Medicine Physician · Glendale, CA

    1,462 Medicare Part D claims (2024)

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  11. 11
    Jatinder PruthiM.D.

    Gastroenterology Physician · Lancaster, CA

    1,274 Medicare Part D claims (2024)

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  12. 12
    Dan DangM.D.

    Cardiovascular Disease Physician · San Jose, CA

    1,251 Medicare Part D claims (2024)

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  13. 13
    Mehra HosseiniM.D.

    Gastroenterology Physician · Berkeley, CA

    1,195 Medicare Part D claims (2024)

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  14. 14
    Susan DowneyM.D.

    Internal Medicine Physician · Fresno, CA

    1,169 Medicare Part D claims (2024)

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  15. 15
    Richard QuistM.D.

    Gastroenterology Physician · Newport Beach, CA

    1,165 Medicare Part D claims (2024)

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  16. 16
    Jung BaeM.D.

    Internal Medicine Physician · Los Angeles, CA

    1,148 Medicare Part D claims (2024)

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  17. 17
    Garbis ApelianMD

    Family Medicine Physician · Van Nuys, CA

    1,136 Medicare Part D claims (2024)

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  18. 18
    Simrita RahalM.D.

    Gastroenterology Physician · Bakersfield, CA

    1,129 Medicare Part D claims (2024)

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  19. 19
    Gurpreet DhuggaMD

    Internal Medicine Physician · Fairfield, CA

    1,122 Medicare Part D claims (2024)

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  20. 20
    Zarine Ter-PoghosyanM.D.

    Family Medicine Physician · Burbank, CA

    1,118 Medicare Part D claims (2024)

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  21. 21
    Parvez MemonMD

    Internal Medicine Physician · Bakersfield, CA

    1,108 Medicare Part D claims (2024)

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  22. 22
    Rajeev ManuM.D.

    Specialist · Bakersfield, CA

    1,069 Medicare Part D claims (2024)

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  23. 23
    Moe AmadpourM.D.

    Gastroenterology Physician · Simi Valley, CA

    1,063 Medicare Part D claims (2024)

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  24. 24
    Marcel FilartMD

    Geriatric Medicine (Internal Medicine) Physician · Los Angeles, CA

    1,061 Medicare Part D claims (2024)

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  25. 25
    Peter LePA-C

    Physician Assistant · Garden Grove, CA

    1,061 Medicare Part D claims (2024)

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  26. 26
    Paramvir RahalMD

    Gastroenterology Physician · Bakersfield, CA

    1,059 Medicare Part D claims (2024)

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  27. 27
    Mark GobrialM.D.

    Internal Medicine Physician · Mission Hills, CA

    1,050 Medicare Part D claims (2024)

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  28. 28
    Oscar ChienM.D.

    Geriatric Medicine (Internal Medicine) Physician · San Gabriel, CA

    1,040 Medicare Part D claims (2024)

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  29. 29
    Weiwen ZhengM.D.

    Family Medicine Physician · San Francisco, CA

    1,033 Medicare Part D claims (2024)

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  30. 30
    Kelvin MaiDO

    Internal Medicine Physician · Santa Ana, CA

    1,015 Medicare Part D claims (2024)

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  31. 31
    Samvel HmayakyanM.D.

    Family Medicine Physician · Glendale, CA

    1,009 Medicare Part D claims (2024)

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  32. 32
    Naveen GaraM.D.

    Gastroenterology Physician · San Diego, CA

    1,004 Medicare Part D claims (2024)

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  33. 33
    Armine NazaryanM.D.

    Family Medicine Physician · Glendale, CA

    1,002 Medicare Part D claims (2024)

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  34. 34
    Edmund YaoM.D.

    Internal Medicine Physician · Stockton, CA

    983 Medicare Part D claims (2024)

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  35. 35
    Young-Jik LeeM.D.

    Internal Medicine Physician · Los Angeles, CA

    983 Medicare Part D claims (2024)

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  36. 36
    Rebecca ZulimM.D.

    Surgery Physician · Visalia, CA

    983 Medicare Part D claims (2024)

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  37. 37
    Sepehr GolbooM.D.

    Family Medicine Physician · Laguna Hills, CA

    976 Medicare Part D claims (2024)

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  38. 38
    Ferdinant SaranMD

    Specialist · Glendale, CA

    975 Medicare Part D claims (2024)

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  39. 39
    Andro SharobiemM.D.

    Internal Medicine Physician · Riverside, CA

    966 Medicare Part D claims (2024)

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  40. 40
    Shahriar JarchiM.D.

    Internal Medicine Physician · Los Angeles, CA

    961 Medicare Part D claims (2024)

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  41. 41
    Chawki GergesM.D.

    Internal Medicine Physician · Visalia, CA

    956 Medicare Part D claims (2024)

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  42. 42
    Daniel NiknamDO

    Internal Medicine Physician · Inglewood, CA

    944 Medicare Part D claims (2024)

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  43. 43
    Thoi LienM.D.

    Family Medicine Physician · Rosemead, CA

    939 Medicare Part D claims (2024)

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  44. 44
    Diana SayadyanM.D.

    Family Medicine Physician · La Canada, CA

    925 Medicare Part D claims (2024)

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  45. 45
    Miteshkumar Patel

    Family Medicine Physician · San Francisco, CA

    921 Medicare Part D claims (2024)

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  46. 46
    Michael GhodsMD

    Internal Medicine Physician · Los Angeles, CA

    921 Medicare Part D claims (2024)

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  47. 47
    Shovek Boyadjian

    Family Medicine Physician · Panorama City, CA

    918 Medicare Part D claims (2024)

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  48. 48
    Sudesh NagavalliMD

    Internal Medicine Physician · Hanford, CA

    912 Medicare Part D claims (2024)

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  49. 49
    Christopher BuiMD

    Gastroenterology Physician · Santa Ana, CA

    885 Medicare Part D claims (2024)

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  50. 50
    Arinder ChadhaMD, MBA, FACP

    Internal Medicine Physician · Los Angeles, CA

    869 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 pantoprazole. Source: CMS NPPES (June 2026).