NPI Central

Levothyroxine (Synthroid, Levoxyl) Prescribers in Colorado

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

5,331 providers in Colorado have Medicare Part D claims for levothyroxine. 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 CO
5,331
Data year
2024
Registry vintage
June 2026

levothyroxine prescribers in Colorado

Ranked by Part D claim volume.
  1. 1
    David Greenberg

    Hospice and Palliative Medicine (Family Medicine) Physician · Durango, CO

    1,874 Medicare Part D claims (2024)

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  2. 2
    Mark BerntsenMD

    Internal Medicine Physician · Greeley, CO

    1,496 Medicare Part D claims (2024)

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  3. 3
    Jameel ChohanM.D.

    General Practice Physician · Golden, CO

    1,353 Medicare Part D claims (2024)

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  4. 4
    Elena AnisimovaM.D.

    Internal Medicine Physician · Denver, CO

    1,208 Medicare Part D claims (2024)

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  5. 5
    Amy MohlerMD

    Geriatric Medicine (Internal Medicine) Physician · Grand Junction, CO

    1,196 Medicare Part D claims (2024)

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  6. 6
    Shad GrubbsMD

    Geriatric Medicine (Internal Medicine) Physician · Brighton, CO

    1,137 Medicare Part D claims (2024)

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  7. 7
    Kurt WeverMD

    Family Medicine Physician · Golden, CO

    1,090 Medicare Part D claims (2024)

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  8. 8
    Bonnie NowakMD

    Internal Medicine Physician · Fort Collins, CO

    1,089 Medicare Part D claims (2024)

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  9. 9
    Dana ChristiansenMD

    Internal Medicine Physician · Greeley, CO

    1,063 Medicare Part D claims (2024)

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  10. 10
    Daniel ZenkMD

    Internal Medicine Physician · Greeley, CO

    1,043 Medicare Part D claims (2024)

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  11. 11
    Michael LoughnerMD

    Endocrinology, Diabetes & Metabolism Physician · Denver, CO

    1,033 Medicare Part D claims (2024)

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  12. 12
    Peter SmithMD

    Internal Medicine Physician · Loveland, CO

    1,030 Medicare Part D claims (2024)

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  13. 13
    Celinde StrohlMD

    Internal Medicine Physician · Littleton, CO

    1,004 Medicare Part D claims (2024)

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  14. 14
    Tish LandrumMD

    Family Medicine Physician · Wheat Ridge, CO

    977 Medicare Part D claims (2024)

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  15. 15
    Robert JuhalaMD

    Internal Medicine Physician · Fort Collins, CO

    971 Medicare Part D claims (2024)

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  16. 16
    Barbara WidomM.D.

    Endocrinology, Diabetes & Metabolism Physician · Fort Collins, CO

    965 Medicare Part D claims (2024)

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  17. 17
    Diego FreitasM.D.

    Internal Medicine Physician · Parker, CO

    955 Medicare Part D claims (2024)

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  18. 18
    Meriam IzonM.D.

    Endocrinology, Diabetes & Metabolism Physician · Fort Collins, CO

    950 Medicare Part D claims (2024)

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  19. 19
    Ghassan Ghuneim

    Family Medicine Physician · Golden, CO

    920 Medicare Part D claims (2024)

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  20. 20
    Lev AsherovMD

    Internal Medicine Physician · Pueblo, CO

    899 Medicare Part D claims (2024)

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  21. 21
    Jeannae DerganceMD

    Geriatric Medicine (Family Medicine) Physician · Aurora, CO

    883 Medicare Part D claims (2024)

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  22. 22
    Arlen StaufferM.D.

    Family Medicine Physician · Parker, CO

    881 Medicare Part D claims (2024)

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  23. 23
    Carol SpiesMD

    Internal Medicine Physician · Greenwood Village, CO

    876 Medicare Part D claims (2024)

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  24. 24
    Mark TurpenM.D.

    Emergency Medicine Physician · Durango, CO

    871 Medicare Part D claims (2024)

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  25. 25
    Kimberly Lerner

    Endocrinology, Diabetes & Metabolism Physician · Boulder, CO

    858 Medicare Part D claims (2024)

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  26. 26
    Ellen BurkettMD

    Internal Medicine Physician · Highlands Ranch, CO

    851 Medicare Part D claims (2024)

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  27. 27
    Kevin MolkM.D.

    Internal Medicine Physician · Parker, CO

    840 Medicare Part D claims (2024)

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  28. 28
    Vikas ReddyM.D.

    Family Medicine Physician · Parker, CO

    832 Medicare Part D claims (2024)

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  29. 29
    Aldona Staar-KumosaMD

    Internal Medicine Physician · Parker, CO

    815 Medicare Part D claims (2024)

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  30. 30
    Xavier HerreraMD

    Internal Medicine Physician · Fort Collins, CO

    814 Medicare Part D claims (2024)

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  31. 31
    Julie PyskloMD

    Internal Medicine Physician · Durango, CO

    802 Medicare Part D claims (2024)

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  32. 32
    Stanton ElziMD

    Internal Medicine Physician · Wheat Ridge, CO

    791 Medicare Part D claims (2024)

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  33. 33
    Michelle CassaraMD

    Endocrinology, Diabetes & Metabolism Physician · Arvada, CO

    788 Medicare Part D claims (2024)

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  34. 34
    John EbensMD

    Internal Medicine Physician · Greeley, CO

    787 Medicare Part D claims (2024)

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  35. 35
    Timothy PodhajskyM.D.

    Family Medicine Physician · Fort Collins, CO

    774 Medicare Part D claims (2024)

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  36. 36
    Johanna FreedmanMD

    Internal Medicine Physician · Arvada, CO

    768 Medicare Part D claims (2024)

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  37. 37
    Jennifer HendrickMD

    Internal Medicine Physician · Fort Collins, CO

    767 Medicare Part D claims (2024)

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  38. 38
    Jarmila PauckovaMD

    Family Medicine Physician · Aurora, CO

    755 Medicare Part D claims (2024)

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  39. 39
    Brian O'Sullivan

    Internal Medicine Physician · Centennial, CO

    750 Medicare Part D claims (2024)

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  40. 40
    Maria CannarozziMD

    Internal Medicine Physician · Golden, CO

    743 Medicare Part D claims (2024)

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  41. 41
    Christina Sherwood

    Internal Medicine Physician · Loveland, CO

    736 Medicare Part D claims (2024)

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  42. 42
    Julia RifkinMD

    Endocrinology, Diabetes & Metabolism Physician · Denver, CO

    735 Medicare Part D claims (2024)

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  43. 43
    Coco DughiM.D.

    Internal Medicine Physician · Boulder, CO

    725 Medicare Part D claims (2024)

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  44. 44
    Anna CosyleonMD

    Internal Medicine Physician · Centennial, CO

    725 Medicare Part D claims (2024)

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  45. 45
    Martha IvesM.D.

    Family Medicine Physician · Arvada, CO

    722 Medicare Part D claims (2024)

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  46. 46
    Jarred FreeseM.D.

    Internal Medicine Physician · Delta, CO

    721 Medicare Part D claims (2024)

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  47. 47
    John MclaughlinM.D.

    Family Medicine Physician · Aurora, CO

    708 Medicare Part D claims (2024)

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  48. 48
    Renee MicielliMD

    Internal Medicine Physician · Westminster, CO

    700 Medicare Part D claims (2024)

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  49. 49
    Timothy PoateMD

    Internal Medicine Physician · Greenwood Village, CO

    698 Medicare Part D claims (2024)

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  50. 50
    Kayla MyrenNP

    Nurse Practitioner · Denver, CO

    689 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 levothyroxine. Source: CMS NPPES (June 2026).