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  • Office

    234a Bank St
    New London, CT 06320
    Phone+1 860-442-0290
    Fax+1 860-442-2136

Summary

  • Dr. John Madsen, MD is a gastroenterologist in New London, Connecticut. He is currently licensed to practice medicine in Connecticut, Virginia, and Illinois.

Education & Training

  • Weill Cornell Medicine
    Weill Cornell MedicineClass of 1968

Certifications & Licensure

  • IL State Medical License
    IL State Medical License 1969 - Present
  • CT State Medical License
    CT State Medical License 1974 - 2025
  • VA State Medical License
    VA State Medical License 1971 - 2008
  • Internal Medicine
    American Board of Internal Medicine Internal Medicine
  • Gastroenterology
    American Board of Internal Medicine Gastroenterology