Metformin (Glucophage, Fortamet) Prescribers in Colorado

1. 1
   David Greenberg

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

   1,321 Medicare Part D claims (2024)

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2. 2
   Jae LeeDO LLC

   Internal Medicine Physician · Centennial, CO

   820 Medicare Part D claims (2024)

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3. 3
   Mark BerntsenMD

   Internal Medicine Physician · Greeley, CO

   704 Medicare Part D claims (2024)

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4. 4
   Alejandro MunozM.D.

   Endocrinology, Diabetes & Metabolism Physician · Fort Collins, CO

   703 Medicare Part D claims (2024)

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5. 5
   Elena AnisimovaM.D.

   Internal Medicine Physician · Denver, CO

   683 Medicare Part D claims (2024)

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6. 6
   Kevin MolkM.D.

   Internal Medicine Physician · Parker, CO

   575 Medicare Part D claims (2024)

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7. 7
   Lev AsherovMD

   Internal Medicine Physician · Pueblo, CO

   564 Medicare Part D claims (2024)

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8. 8
   Sheila MaierD.O.

   Endocrinology, Diabetes & Metabolism Physician · Denver, CO

   536 Medicare Part D claims (2024)

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9. 9
   Herman HasselkusM.D.

   Geriatric Medicine (Internal Medicine) Physician · Aurora, CO

   502 Medicare Part D claims (2024)

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10. 10
    Andy Fine

    Internal Medicine Physician · Littleton, CO

    494 Medicare Part D claims (2024)

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11. 11
    Swarupa ReddyMD

    Internal Medicine Physician · Westminster, CO

    484 Medicare Part D claims (2024)

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12. 12
    Kimberly Lerner

    Endocrinology, Diabetes & Metabolism Physician · Boulder, CO

    482 Medicare Part D claims (2024)

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13. 13
    Xavier HerreraMD

    Internal Medicine Physician · Fort Collins, CO

    457 Medicare Part D claims (2024)

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14. 14
    Steve SundermanM.D.

    Internal Medicine Physician · Denver, CO

    452 Medicare Part D claims (2024)

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15. 15
    Joseph YangD.O.

    Family Medicine Physician · Colorado Springs, CO

    449 Medicare Part D claims (2024)

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16. 16
    Fernando ArroyoMD

    Internal Medicine Physician · Littleton, CO

    448 Medicare Part D claims (2024)

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17. 17
    John WagonlanderDO

    Internal Medicine Physician · Lakewood, CO

    444 Medicare Part D claims (2024)

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18. 18
    Nicholas PiantanidaM.D.

    Sports Medicine (Family Medicine) Physician · Colorado Springs, CO

    442 Medicare Part D claims (2024)

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19. 19
    Anna LarionovaMD

    Internal Medicine Physician · Aurora, CO

    439 Medicare Part D claims (2024)

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20. 20
    Joel JorgensonM.D.

    Internal Medicine Physician · Westminster, CO

    435 Medicare Part D claims (2024)

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21. 21
    Lawrence RothMD

    Internal Medicine Physician · Englewood, CO

    426 Medicare Part D claims (2024)

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22. 22
    Renee MicielliMD

    Internal Medicine Physician · Westminster, CO

    425 Medicare Part D claims (2024)

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23. 23
    Brian AhlstrandM.D.

    Internal Medicine Physician · Westminster, CO

    421 Medicare Part D claims (2024)

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24. 24
    Mark PtaskiewiczMD

    Internal Medicine Physician · Westminster, CO

    417 Medicare Part D claims (2024)

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25. 25
    Daniel ZenkMD

    Internal Medicine Physician · Greeley, CO

    412 Medicare Part D claims (2024)

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26. 26
    Mark FraleyD.O.

    Family Medicine Physician · Colorado Springs, CO

    409 Medicare Part D claims (2024)

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27. 27
    Wesley PearsonM.D.

    Internal Medicine Physician · Westminster, CO

    409 Medicare Part D claims (2024)

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28. 28
    Mary CarrascoNURSE PRACTITIONER

    Primary Care Nurse Practitioner · Denver, CO

    398 Medicare Part D claims (2024)

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29. 29
    Mauricio WaintrubM.D.

    Internal Medicine Physician · Aurora, CO

    396 Medicare Part D claims (2024)

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30. 30
    Khoi NguyenD.O.

    Family Medicine Physician · Denver, CO

    394 Medicare Part D claims (2024)

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31. 31
    Trevor ClaybornMD

    Internal Medicine Physician · Longmont, CO

    390 Medicare Part D claims (2024)

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32. 32
    Iratxe Eskurza GarciaMD

    Endocrinology, Diabetes & Metabolism Physician · Longmont, CO

    388 Medicare Part D claims (2024)

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33. 33
    Douglas AltschulerDO

    Internal Medicine Physician · Aurora, CO

    386 Medicare Part D claims (2024)

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34. 34
    Richard MillsteinD.O.

    Endocrinology, Diabetes & Metabolism Physician · Greeley, CO

    386 Medicare Part D claims (2024)

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35. 35
    John EbensMD

    Internal Medicine Physician · Greeley, CO

    382 Medicare Part D claims (2024)

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36. 36
    James HardeeMD

    Internal Medicine Physician · Westminster, CO

    374 Medicare Part D claims (2024)

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37. 37
    Kasey MccreightM.D.

    Family Medicine Physician · Pueblo, CO

    374 Medicare Part D claims (2024)

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38. 38
    Esteban GallegoMD

    Internal Medicine Physician · Aurora, CO

    372 Medicare Part D claims (2024)

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39. 39
    Jason WestDO

    Family Medicine Physician · Wheat Ridge, CO

    371 Medicare Part D claims (2024)

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40. 40
    Anna WilkinsMD

    Obesity Medicine (Family Medicine) Physician · Fort Collins, CO

    369 Medicare Part D claims (2024)

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41. 41
    Jennifer SalstonM.D.

    Internal Medicine Physician · Lakewood, CO

    369 Medicare Part D claims (2024)

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42. 42
    Romano AbuabaMD

    Internal Medicine Physician · Aurora, CO

    368 Medicare Part D claims (2024)

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43. 43
    Colin CombsMD

    Internal Medicine Physician · Wheat Ridge, CO

    368 Medicare Part D claims (2024)

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44. 44
    Kayla MyrenNP

    Nurse Practitioner · Denver, CO

    363 Medicare Part D claims (2024)

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45. 45
    Dana ChristiansenMD

    Internal Medicine Physician · Greeley, CO

    362 Medicare Part D claims (2024)

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46. 46
    Robert JuhalaMD

    Internal Medicine Physician · Fort Collins, CO

    362 Medicare Part D claims (2024)

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47. 47
    Robert MccurryD.O.

    Family Medicine Physician · Canon City, CO

    360 Medicare Part D claims (2024)

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48. 48
    Danielle DoroM.D.

    Internal Medicine Physician · Greeley, CO

    356 Medicare Part D claims (2024)

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49. 49
    Jenna MillironNP

    Family Nurse Practitioner · Denver, CO

    355 Medicare Part D claims (2024)

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50. 50
    Mary TuukMD

    Geriatric Medicine (Internal Medicine) Physician · Golden, CO

    354 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 metformin. Source: CMS NPPES (June 2026).