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John Fahey, MD

Pediatric Cardiology
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Patient type treated
Child, Adult
Accepting new patients
Referral required
From patients or physicians
Board Certified in


John T. Fahey, MD, is director of Yale Medicine’s Adult Congenital Heart Program. A cardiologist, he has more than 30 years of experience treating congenital heart disease in children and adults. He tells new patients, “We can usually make your heart function very close to normal.”

Dr. Fahey researches exercise in patients with congenital heart disease. He also studies the abnormal physiology of congenital heart disease, and when and how to best treat it.”

He derives his greatest satisfaction from caring for young patients over time and watching them grow into adults. He is most excited about new catheterization methods that enable a patient with congenital heart disease to avoid surgery. He is a professor of pediatrics (cardiology) and an associate clinical professor of nursing at Yale School of Medicine.


  • Professor of Pediatrics (Cardiology) and Associate Clinical Professor of Nursing
  • Director, Pediatric Exercise Laboratory
  • Co-Director, Pediatric Cardiology Fellowship Program, Pediatric Cardiology

Education & Training

  • Fellow
    Yale-New Haven Hospital (1985)
  • Intern & Resident
    Johns Hopkins Hospital (1982)
  • MD
    New Jersey Medical School (1979)

Additional Information

  • Yale Pediatric Specialty Center/Pediatric Cardiology
    Yale New Haven Children's Hospital
    1 Park Street, Ste West Pavilion - 2nd Floor
    New Haven, CT, 06504
  • Yale Pediatric Cardiology
    Primary Care Center, Yale New Haven Hospital
    789 Howard Avenue
    New Haven, CT, 06519
  • Yale Adult Congenital Heart Program
    Yale Physicians Building
    800 Howard Avenue, Fl 2nd
    New Haven, CT, 06519
  • Yale Pediatric Cardiology
    Lawrence + Memorial Hospital
    365 Montauk Avenue
    New London, CT, 06320
  • Yale Pediatric Specialty Center
    747 Belden Avenue
    Norwalk, CT, 06850
  • Yale Pediatric Cardiology
    William W. Backus Hospital
    326 Washington Street
    Norwich, CT, 06360