NPI Central

Metformin (Glucophage, Fortamet) Prescribers in Connecticut

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

3,025 providers in Connecticut 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 CT
3,025
Data year
2024
Registry vintage
June 2026

metformin prescribers in Connecticut

Ranked by Part D claim volume.
  1. 1

    Internal Medicine Physician · Wolcott, CT

    2,522 Medicare Part D claims (2024)

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  2. 2

    Family Medicine Physician · Wallingford, CT

    1,694 Medicare Part D claims (2024)

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  3. 3

    Geriatric Medicine (Internal Medicine) Physician · Hartford, CT

    1,154 Medicare Part D claims (2024)

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  4. 4

    Endocrinology, Diabetes & Metabolism Physician · New Haven, CT

    1,126 Medicare Part D claims (2024)

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  5. 5

    Family Medicine Physician · Stamford, CT

    973 Medicare Part D claims (2024)

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  6. 6

    Internal Medicine Physician · Enfield, CT

    891 Medicare Part D claims (2024)

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  7. 7

    Internal Medicine Physician · Sandy Hook, CT

    868 Medicare Part D claims (2024)

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  8. 8

    Internal Medicine Physician · Hamden, CT

    816 Medicare Part D claims (2024)

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  9. 9

    Geriatric Medicine (Internal Medicine) Physician · New Haven, CT

    812 Medicare Part D claims (2024)

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  10. 10

    Internal Medicine Physician · Fairfield, CT

    798 Medicare Part D claims (2024)

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  11. 11

    Endocrinology, Diabetes & Metabolism Physician · Bloomfield, CT

    763 Medicare Part D claims (2024)

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  12. 12

    Geriatric Medicine (Internal Medicine) Physician · Hartford, CT

    762 Medicare Part D claims (2024)

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  13. 13

    Internal Medicine Physician · Bloomfield, CT

    719 Medicare Part D claims (2024)

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  14. 14

    Internal Medicine Physician · Enfield, CT

    713 Medicare Part D claims (2024)

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  15. 15

    Endocrinology, Diabetes & Metabolism Physician · Norwalk, CT

    686 Medicare Part D claims (2024)

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  16. 16

    Hospitalist Physician · Hartford, CT

    674 Medicare Part D claims (2024)

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  17. 17

    Internal Medicine Physician · Manchester, CT

    670 Medicare Part D claims (2024)

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  18. 18

    Internal Medicine Physician · Canton, CT

    665 Medicare Part D claims (2024)

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  19. 19

    Internal Medicine Physician · Newington, CT

    644 Medicare Part D claims (2024)

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  20. 20

    Internal Medicine Physician · Wallingford, CT

    630 Medicare Part D claims (2024)

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  21. 21

    Internal Medicine Physician · Norwich, CT

    630 Medicare Part D claims (2024)

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  22. 22

    Internal Medicine Physician · Wethersfield, CT

    607 Medicare Part D claims (2024)

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  23. 23

    Endocrinology, Diabetes & Metabolism Physician · Vernon, CT

    599 Medicare Part D claims (2024)

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  24. 24

    Endocrinology, Diabetes & Metabolism Physician · Ansonia, CT

    595 Medicare Part D claims (2024)

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  25. 25

    Hospice and Palliative Medicine (Family Medicine) Physician · Danielson, CT

    589 Medicare Part D claims (2024)

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  26. 26

    Internal Medicine Physician · Milford, CT

    585 Medicare Part D claims (2024)

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  27. 27

    Internal Medicine Physician · Waterbury, CT

    583 Medicare Part D claims (2024)

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  28. 28

    Internal Medicine Physician · Plantsville, CT

    578 Medicare Part D claims (2024)

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  29. 29

    Internal Medicine Physician · West Haven, CT

    578 Medicare Part D claims (2024)

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  30. 30

    Endocrinology, Diabetes & Metabolism Physician · New Haven, CT

    576 Medicare Part D claims (2024)

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  31. 31

    Endocrinology, Diabetes & Metabolism Physician · Avon, CT

    565 Medicare Part D claims (2024)

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  32. 32

    Family Nurse Practitioner · Torrington, CT

    541 Medicare Part D claims (2024)

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  33. 33

    Endocrinology, Diabetes & Metabolism Physician · East Hartford, CT

    536 Medicare Part D claims (2024)

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  34. 34

    Family Medicine Physician · Manchester, CT

    536 Medicare Part D claims (2024)

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  35. 35

    Internal Medicine Physician · Newington, CT

    528 Medicare Part D claims (2024)

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  36. 36

    Internal Medicine Physician · North Haven, CT

    523 Medicare Part D claims (2024)

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  37. 37

    Endocrinology, Diabetes & Metabolism Physician · New Britain, CT

    515 Medicare Part D claims (2024)

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  38. 38

    Endocrinology, Diabetes & Metabolism Physician · New Haven, CT

    514 Medicare Part D claims (2024)

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  39. 39

    Internal Medicine Physician · South Windsor, CT

    511 Medicare Part D claims (2024)

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  40. 40

    Endocrinology, Diabetes & Metabolism Physician · Stamford, CT

    511 Medicare Part D claims (2024)

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  41. 41

    Endocrinology, Diabetes & Metabolism Physician · Stamford, CT

    508 Medicare Part D claims (2024)

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  42. 42

    Endocrinology, Diabetes & Metabolism Physician · Trumbull, CT

    500 Medicare Part D claims (2024)

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  43. 43

    Internal Medicine Physician · Farmington, CT

    494 Medicare Part D claims (2024)

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  44. 44

    Internal Medicine Physician · Dayville, CT

    494 Medicare Part D claims (2024)

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  45. 45

    Endocrinology, Diabetes & Metabolism Physician · Trumbull, CT

    487 Medicare Part D claims (2024)

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  46. 46

    Family Medicine Physician · New London, CT

    486 Medicare Part D claims (2024)

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  47. 47

    Endocrinology, Diabetes & Metabolism Physician · New London, CT

    480 Medicare Part D claims (2024)

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  48. 48

    Endocrinology, Diabetes & Metabolism Physician · Farmington, CT

    478 Medicare Part D claims (2024)

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  49. 49

    Pulmonary Disease Physician · Seymour, CT

    465 Medicare Part D claims (2024)

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  50. 50

    Internal Medicine Physician · Wallingford, CT

    464 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).