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Dr. Mahony received her S.B. from the Massachusetts Institute of Technology (MIT) and her M.D. from Stanford University. She completed residency training in pediatrics at Stanford University Medical Center, followed by fellowship training in cardiology at the Cardiovascular Research Institutes/University of California, San Francisco.

Dr. Mahony joined the faculty of the University of Texas Southwestern Medical Center in 1985, and is currently Professor of Pediatrics. She is the Director of the Pediatric Cardiology Fellowship Training Program. She has chaired the NHLBI-funded Pediatric Heart Network since 2001. 

In 2018, she was included in D Magazine's Best Doctors list and was named a Super Doctor by Texas Monthly.

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Education & Training
  • Fellowship - University of California at San Francisco (1978-1981), Pediatric Cardiology
  • Residency - Stanford University Hospital (1975-1978), Pediatrics
  • Medical School - Stanford University School of Medicine (1971-1975)
Professional Associations & Affiliations
  • Dallas County Medical Society (1985-2011)
  • Fellow, American Heart Association (1980-2011)
  • American Academy of Pediatrics (1982-2011)
  • Texas Medical Association (1985-2011)
Honors & Awards
  • Protocol Chair 2011, Pediatric Heart Disease Clinical Research Network (NIH)
  • Walter M. Kirkendall, MD, American Heart Association 1995, Scientist/Educator Volunteer of the Year
  • Chair 2001, Pediatric Heart Disease Clinical Research Network (NIH)
  • Editorial Board, Circulation 2004
  • Texas Super Doctors 2005-2017, Texas Monthly Magazine
  • Meritorious Achievement Award 2007, American Heart Association
  • William J. Rashkind Memorial Lecturer 2009, Cardiology 2009 Meeting, sponsored by the Children's Hospital of Philadelphia
  • Core Clerkship Teaching Award 2009, Medical Student Teaching
  • US News and World Report 2011, Top US Doctor
  • Best Pediatric Specialists 2017, D Magazine
Books & Publications
  • Quality of life in pediatric patients with heart disease
  • Marfan syndrome
  • Congestive heart failure
  • Congenital heart disease

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Children's Medical Center of Dallas

1935 Medical District Drive
Dallas, Texas 75235
214-730-5437 Directions