Tamsulosin (Flomax) Prescribers in California

1. 1
   Felix Chi-Ming YipM.D.

   Urology Physician · Monterey Park, CA

   8,324 Medicare Part D claims (2024)

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2. 2
   Armen KassabianM.D.

   Urology Physician · Burbank, CA

   4,511 Medicare Part D claims (2024)

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3. 3
   Luke YoonM.D.

   Specialist · Los Angeles, CA

   3,407 Medicare Part D claims (2024)

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4. 4
   Leonard RenferMD

   Urology Physician · Salinas, CA

   2,909 Medicare Part D claims (2024)

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5. 5
   Wenwu JinM.D., PH.D.

   Urology Physician · San Francisco, CA

   2,782 Medicare Part D claims (2024)

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6. 6
   Kamyar EbrahimiM.D.

   Urology Physician · Glendale, CA

   2,550 Medicare Part D claims (2024)

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7. 7
   Khoi TangM.D.

   Urology Physician · Garden Grove, CA

   2,387 Medicare Part D claims (2024)

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8. 8
   Alexander GershmanMD

   Specialist · Los Angeles, CA

   2,375 Medicare Part D claims (2024)

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9. 9
   Arutyun TopsakalyanMD

   General Practice Physician · Glendale, CA

   2,367 Medicare Part D claims (2024)

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10. 10
    Abbas HasnainM.D., J.D.

    Internal Medicine Physician · Fresno, CA

    2,331 Medicare Part D claims (2024)

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11. 11
    Soheil NikuMD

    Specialist · Simi Valley, CA

    2,192 Medicare Part D claims (2024)

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12. 12
    Neyssan TebyaniM.D.

    Specialist · Laguna Hills, CA

    2,152 Medicare Part D claims (2024)

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13. 13
    Sun KimMD

    Urology Physician · San Bernardino, CA

    2,130 Medicare Part D claims (2024)

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14. 14
    Behnam ShenassaM.D.

    Urology Physician · Los Angeles, CA

    2,128 Medicare Part D claims (2024)

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15. 15
    Armen DerboghossiansM.D

    Urology Physician · Glendale, CA

    2,122 Medicare Part D claims (2024)

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16. 16
    Ronald YangMD

    Urology Physician · Bellflower, CA

    2,006 Medicare Part D claims (2024)

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17. 17
    Ori MelamudMD

    Urology Physician · Burlingame, CA

    1,950 Medicare Part D claims (2024)

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18. 18
    Shahin DerboghossiansMD

    Urology Physician · Glendale, CA

    1,908 Medicare Part D claims (2024)

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19. 19
    Shabbir ShakirM.D.

    Urology Physician · Bakersfield, CA

    1,861 Medicare Part D claims (2024)

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20. 20
    Asha Pritpal SidhuMD

    Internal Medicine Physician · Fresno, CA

    1,842 Medicare Part D claims (2024)

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21. 21
    Armine NazaryanM.D.

    Family Medicine Physician · Glendale, CA

    1,767 Medicare Part D claims (2024)

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22. 22
    Ali AlaviM.D.

    Urology Physician · Fullerton, CA

    1,759 Medicare Part D claims (2024)

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23. 23
    Vagharshak PilossyanM.D.

    Family Medicine Physician · Van Nuys, CA

    1,757 Medicare Part D claims (2024)

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24. 24
    Erik PasinMD

    Urology Physician · Mission Viejo, CA

    1,705 Medicare Part D claims (2024)

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25. 25
    Samuel LeeM.D.

    Urology Physician · Los Angeles, CA

    1,691 Medicare Part D claims (2024)

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26. 26
    Dennis CesarM.D.

    Urology Physician · Merced, CA

    1,690 Medicare Part D claims (2024)

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27. 27
    Razmik OhanjanianMD

    Cardiovascular Disease Physician · Glendale, CA

    1,584 Medicare Part D claims (2024)

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28. 28
    Yevgeniy VeltmanM.D.

    Urology Physician · San Francisco, CA

    1,516 Medicare Part D claims (2024)

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29. 29
    Josh HsuMD

    Urology Physician · Burlingame, CA

    1,497 Medicare Part D claims (2024)

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30. 30
    Juan AlarconMD

    Urology Physician · Montebello, CA

    1,491 Medicare Part D claims (2024)

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31. 31
    Matthew RainwaterM.D.

    General Practice Physician · Fresno, CA

    1,471 Medicare Part D claims (2024)

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32. 32
    Josh RandallMD

    Urology Physician · Laguna Hills, CA

    1,446 Medicare Part D claims (2024)

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33. 33
    Henrik KhatchatourianMD

    Family Medicine Physician · Glendale, CA

    1,432 Medicare Part D claims (2024)

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34. 34
    Sameer MalhotraM.D.

    Urology Physician · Los Angeles, CA

    1,421 Medicare Part D claims (2024)

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35. 35
    Chih-Hsin WenMD

    Urology Physician · Oakland, CA

    1,419 Medicare Part D claims (2024)

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36. 36
    Han LoM.D.

    Urology Physician · San Jose, CA

    1,405 Medicare Part D claims (2024)

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37. 37
    Don BuiM.D.

    Urology Physician · Laguna Hills, CA

    1,393 Medicare Part D claims (2024)

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38. 38
    Anahit BlikianM.D.

    Adolescent Medicine (Family Medicine) Physician · Glendale, CA

    1,355 Medicare Part D claims (2024)

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39. 39
    John ConnollyM.D.

    Urology Physician · Burlingame, CA

    1,351 Medicare Part D claims (2024)

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40. 40
    Rodman RogersM.D.

    Urology Physician · San Francisco, CA

    1,341 Medicare Part D claims (2024)

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41. 41
    Alan YamadaMD

    Urology Physician · Arcadia, CA

    1,324 Medicare Part D claims (2024)

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42. 42
    John KowalczykDO

    Urology Physician · Los Angeles, CA

    1,297 Medicare Part D claims (2024)

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43. 43
    Theodore AffueM.D.

    Urology Physician · El Centro, CA

    1,293 Medicare Part D claims (2024)

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44. 44
    Brett LebedMD

    Urology Physician · Santa Maria, CA

    1,287 Medicare Part D claims (2024)

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45. 45
    Mark SalehM.D.

    Urology Physician · Fremont, CA

    1,283 Medicare Part D claims (2024)

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46. 46
    Kiumars HekmatM.D.

    Urology Physician · Sacramento, CA

    1,274 Medicare Part D claims (2024)

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47. 47
    Jonathan ShiauM.D.

    Urology Physician · Newport Beach, CA

    1,267 Medicare Part D claims (2024)

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48. 48
    Bobby AlexanderM.D.

    Urology Physician · Palm Desert, CA

    1,256 Medicare Part D claims (2024)

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49. 49
    Brad WolfsonMD

    Urology Physician · Palm Springs, CA

    1,256 Medicare Part D claims (2024)

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50. 50
    Sy TsiMD

    Urology Physician · Corona, CA

    1,250 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 tamsulosin. Source: CMS NPPES (June 2026).