NPI Central

Metformin (Glucophage, Fortamet) Prescribers in Massachusetts

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

6,825 providers in Massachusetts have Medicare Part D claims for metformin. 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 MA
6,825
Data year
2024
Registry vintage
June 2026

metformin prescribers in Massachusetts

Ranked by Part D claim volume.
  1. 1

    Internal Medicine Physician · Weston, MA

    2,510 Medicare Part D claims (2024)

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  2. 2

    Nurse Practitioner · Andover, MA

    1,852 Medicare Part D claims (2024)

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  3. 3

    Internal Medicine Physician · Worcester, MA

    1,577 Medicare Part D claims (2024)

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  4. 4

    Physician Assistant · Worcester, MA

    1,527 Medicare Part D claims (2024)

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  5. 5

    Endocrinology, Diabetes & Metabolism Physician · Burlington, MA

    1,470 Medicare Part D claims (2024)

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  6. 6

    Internal Medicine Physician · Lawrence, MA

    1,432 Medicare Part D claims (2024)

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  7. 7

    Geriatric Medicine (Internal Medicine) Physician · New Bedford, MA

    1,183 Medicare Part D claims (2024)

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  8. 8

    Family Medicine Physician · Leeds, MA

    1,121 Medicare Part D claims (2024)

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  9. 9

    Geriatric Medicine (Internal Medicine) Physician · Chelmsford, MA

    1,109 Medicare Part D claims (2024)

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  10. 10

    Family Medicine Physician · Holliston, MA

    1,063 Medicare Part D claims (2024)

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  11. 11

    Internal Medicine Physician · Boston, MA

    1,052 Medicare Part D claims (2024)

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  12. 12

    Internal Medicine Physician · Boston, MA

    1,009 Medicare Part D claims (2024)

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  13. 13

    Geriatric Medicine (Family Medicine) Physician · East Longmeadow, MA

    1,001 Medicare Part D claims (2024)

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  14. 14

    Internal Medicine Physician · Westfield, MA

    974 Medicare Part D claims (2024)

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  15. 15

    Medical Physician Assistant · Lawrence, MA

    948 Medicare Part D claims (2024)

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  16. 16

    Internal Medicine Physician · North Andover, MA

    939 Medicare Part D claims (2024)

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  17. 17

    Acute Care Nurse Practitioner · Worcester, MA

    921 Medicare Part D claims (2024)

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  18. 18

    Family Medicine Physician · Brockton, MA

    905 Medicare Part D claims (2024)

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  19. 19

    Family Nurse Practitioner · Dartmouth, MA

    904 Medicare Part D claims (2024)

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  20. 20

    Internal Medicine Physician · Boston, MA

    883 Medicare Part D claims (2024)

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  21. 21

    Internal Medicine Physician · N Chelmsford, MA

    865 Medicare Part D claims (2024)

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  22. 22

    Family Nurse Practitioner · Dartmouth, MA

    857 Medicare Part D claims (2024)

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  23. 23

    Internal Medicine Physician · Springfield, MA

    855 Medicare Part D claims (2024)

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  24. 24

    Internal Medicine Physician · Haverhill, MA

    851 Medicare Part D claims (2024)

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  25. 25

    Endocrinology, Diabetes & Metabolism Physician · Harwich, MA

    847 Medicare Part D claims (2024)

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  26. 26

    Family Medicine Physician · Raynham, MA

    815 Medicare Part D claims (2024)

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  27. 27

    Internal Medicine Physician · Brockton, MA

    812 Medicare Part D claims (2024)

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  28. 28

    Endocrinology, Diabetes & Metabolism Physician · Stoneham, MA

    804 Medicare Part D claims (2024)

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  29. 29

    Internal Medicine Physician · Holyoke, MA

    791 Medicare Part D claims (2024)

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  30. 30

    Family Nurse Practitioner · Westford, MA

    789 Medicare Part D claims (2024)

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  31. 31

    Family Medicine Physician · Fall River, MA

    783 Medicare Part D claims (2024)

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  32. 32

    Internal Medicine Physician · Quincy, MA

    776 Medicare Part D claims (2024)

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  33. 33

    Internal Medicine Physician · Fall River, MA

    774 Medicare Part D claims (2024)

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  34. 34

    Internal Medicine Physician · Cambridge, MA

    771 Medicare Part D claims (2024)

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  35. 35

    Family Medicine Physician · Lawrence, MA

    769 Medicare Part D claims (2024)

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  36. 36

    Geriatric Medicine (Internal Medicine) Physician · New Bedford, MA

    761 Medicare Part D claims (2024)

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  37. 37

    Family Nurse Practitioner · Lawrence, MA

    761 Medicare Part D claims (2024)

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  38. 38

    Diabetes Educator Registered Nurse · Stoneham, MA

    746 Medicare Part D claims (2024)

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  39. 39

    Hospitalist Physician · Norwood, MA

    740 Medicare Part D claims (2024)

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  40. 40

    Internal Medicine Physician · Lynn, MA

    736 Medicare Part D claims (2024)

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  41. 41

    Physical Medicine & Rehabilitation Physician · Ludlow, MA

    734 Medicare Part D claims (2024)

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  42. 42

    Student in an Organized Health Care Education/Training Program · Salem, MA

    732 Medicare Part D claims (2024)

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  43. 43

    Internal Medicine Physician · Worcester, MA

    731 Medicare Part D claims (2024)

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  44. 44

    Internal Medicine Physician · Boston, MA

    729 Medicare Part D claims (2024)

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  45. 45
    Patricia GrindellAPRN-BC, ADM

    Nurse Practitioner · Fall River, MA

    704 Medicare Part D claims (2024)

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  46. 46

    Family Medicine Physician · Barre, MA

    689 Medicare Part D claims (2024)

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  47. 47

    Endocrinology, Diabetes & Metabolism Physician · Gloucester, MA

    686 Medicare Part D claims (2024)

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  48. 48

    Internal Medicine Physician · N Chelmsford, MA

    682 Medicare Part D claims (2024)

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  49. 49

    Internal Medicine Physician · Fall River, MA

    673 Medicare Part D claims (2024)

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  50. 50

    Physician Assistant · Worcester, MA

    671 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).