NPI Central

Tadalafil (Cialis, Adcirca) Prescribers in Oregon

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

118 providers in Oregon have Medicare Part D claims for tadalafil. 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 OR
118
Data year
2024
Registry vintage
June 2026

tadalafil prescribers in Oregon

Ranked by Part D claim volume.
  1. 1
    Kevin BrandtPA-C

    Physician Assistant · Portland, OR

    152 Medicare Part D claims (2024)

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  2. 2
    Daniel KhalilMD

    Urology Physician · Grants Pass, OR

    133 Medicare Part D claims (2024)

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  3. 3
    Da David JiangM.D.

    Urology Physician · Portland, OR

    128 Medicare Part D claims (2024)

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  4. 4
    Lianne LinMD

    Pulmonary Disease Physician · Beaverton, OR

    100 Medicare Part D claims (2024)

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  5. 5
    Jeffrey RobinsonM.D.

    Pulmonary Disease Physician · Portland, OR

    96 Medicare Part D claims (2024)

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  6. 6
    Rou WangMD

    Urology Physician · Clackamas, OR

    84 Medicare Part D claims (2024)

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  7. 7
    Leanna MahM.D.

    Urology Physician · Clackamas, OR

    77 Medicare Part D claims (2024)

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  8. 8
    James TycastM.D.

    Urology Physician · Portland, OR

    75 Medicare Part D claims (2024)

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  9. 9
    Catherine MarkinMD

    Pulmonary Disease Physician · Portland, OR

    73 Medicare Part D claims (2024)

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  10. 10
    Granthem FarrDO

    Pulmonary Disease Physician · Portland, OR

    71 Medicare Part D claims (2024)

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  11. 11
    Wayne StraussMD, PHD

    Pulmonary Disease Physician · Portland, OR

    67 Medicare Part D claims (2024)

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  12. 12
    Ehud ZusmanMD

    Urology Physician · Portland, OR

    66 Medicare Part D claims (2024)

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  13. 13
    Wijan PrapongM.D.

    Internal Medicine Physician · Portland, OR

    65 Medicare Part D claims (2024)

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  14. 14
    David ZollingerMD

    Family Medicine Physician · Eugene, OR

    63 Medicare Part D claims (2024)

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  15. 15
    Kevin ShererMD

    Pulmonary Disease Physician · Bend, OR

    63 Medicare Part D claims (2024)

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  16. 16
    Jeffrey WoldrichM.D.

    Urology Physician · Portland, OR

    59 Medicare Part D claims (2024)

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  17. 17
    Steven SearsD.O.

    Pulmonary Disease Physician · Portland, OR

    55 Medicare Part D claims (2024)

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  18. 18
    Amanda VandlacM.D.

    Urology Physician · Portland, OR

    54 Medicare Part D claims (2024)

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  19. 19
    Eric ReidM.D.

    Urology Physician · Portland, OR

    51 Medicare Part D claims (2024)

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  20. 20
    Maxine DexterMD

    Pulmonary Disease Physician · Clackamas, OR

    50 Medicare Part D claims (2024)

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  21. 21
    Jonathan RettmannM.D.

    Pulmonary Disease Physician · Clackamas, OR

    50 Medicare Part D claims (2024)

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  22. 22
    Jeffrey WheatMD

    Urology Physician · Clackamas, OR

    44 Medicare Part D claims (2024)

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  23. 23
    Shefaa GeorgeM.D.

    Family Medicine Physician · Portland, OR

    43 Medicare Part D claims (2024)

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  24. 24
    Kristine WindomPAC

    Surgical Physician Assistant · Portland, OR

    40 Medicare Part D claims (2024)

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  25. 25
    Jason PhillipsM.D.

    Internal Medicine Physician · Salem, OR

    38 Medicare Part D claims (2024)

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  26. 26
    Kamran FirooziM.D.

    Pulmonary Disease Physician · Salem, OR

    36 Medicare Part D claims (2024)

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  27. 27
    Richard HsuMD

    Internal Medicine Physician · Portland, OR

    34 Medicare Part D claims (2024)

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  28. 28
    Gregory CostMD

    Urology Physician · Tualatin, OR

    33 Medicare Part D claims (2024)

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  29. 29
    Alan HayM.D.

    Urology Physician · Salem, OR

    33 Medicare Part D claims (2024)

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  30. 30
    Jason FlamiatosM.D., M.P.H.

    Urology Physician · Bend, OR

    32 Medicare Part D claims (2024)

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  31. 31
    Jeremy FeldmanM.D.

    Pulmonary Disease Physician · Bend, OR

    31 Medicare Part D claims (2024)

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  32. 32
    Sherie GauseM,D,

    Pulmonary Disease Physician · Portland, OR

    29 Medicare Part D claims (2024)

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  33. 33
    James BreseeM.D.

    Urology Physician · Portland, OR

    29 Medicare Part D claims (2024)

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  34. 34
    Ronald ImM.D.

    Urology Physician · Hillsboro, OR

    27 Medicare Part D claims (2024)

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  35. 35
    Michael GardnerM.D.

    Urology Physician · Tualatin, OR

    26 Medicare Part D claims (2024)

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  36. 36
    Joel HorstPA-C

    Medical Physician Assistant · Salem, OR

    25 Medicare Part D claims (2024)

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  37. 37
    Ella UngerMD

    Urology Physician · Hillsboro, OR

    25 Medicare Part D claims (2024)

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  38. 38
    Rhett CummingsMD

    Pulmonary Disease Physician · Portland, OR

    25 Medicare Part D claims (2024)

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  39. 39
    Shammai RockoveM.D.

    Urology Physician · Gresham, OR

    25 Medicare Part D claims (2024)

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  40. 40
    Stephen Proctor

    Urology Physician · Clackamas, OR

    24 Medicare Part D claims (2024)

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  41. 41
    Donald ValerioMD

    Internal Medicine Physician · Portland, OR

    22 Medicare Part D claims (2024)

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  42. 42
    Juan Tamariz-LoorMD

    Critical Care Medicine (Internal Medicine) Physician · Bend, OR

    20 Medicare Part D claims (2024)

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  43. 43
    Thomas Dudrey

    Internal Medicine Physician · Portland, OR

    20 Medicare Part D claims (2024)

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  44. 44
    Stanley MyersM.D.

    Urology Physician · Portland, OR

    20 Medicare Part D claims (2024)

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  45. 45
    Annabel ChenPA-C

    Physician Assistant · Eugene, OR

    20 Medicare Part D claims (2024)

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  46. 46
    Matthew WalterM.D.

    Pulmonary Disease Physician · Eugene, OR

    19 Medicare Part D claims (2024)

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  47. 47
    Michael CarrollMD

    Internal Medicine Physician · Portland, OR

    19 Medicare Part D claims (2024)

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  48. 48
    David RubinM.D.

    Internal Medicine Physician · Portland, OR

    19 Medicare Part D claims (2024)

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  49. 49
    Robert CrouseM.D.

    Internal Medicine Physician · Hillsboro, OR

    19 Medicare Part D claims (2024)

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  50. 50
    Richard BurtMD

    Urology Physician · Clackamas, OR

    19 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 tadalafil. Source: CMS NPPES (June 2026).