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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.

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


Medical School
Stanford University School of Medicine (1975)
Stanford University Hospital (1978), Pediatrics
University of California at San Francisco (1981), Pediatric Cardiology
Research Fellowship
University of California at San Francisco (1981), Pediatric Cardiology

Research Interest

  • Congenital heart disease
  • Congestive heart failure
  • Dilated aorta
  • Marfan syndrome
  • Quality of life in pediatric patients with heart disease


Featured Publications LegendFeatured Publications

Cardiac contractile and calcium transport function after burn injury in adult and aged guinea pigs.
Horton JW, Kaufman TM, White DJ, Mahony L J. Surg. Res. 1993 Jul 55 1 87-96
Age-related changes in myocardial relaxation and sarcoplasmic reticulum function.
Kaufman TM, Horton JW, White DJ, Mahony L Am. J. Physiol. 1990 Aug 259 2 Pt 2 H309-16
Analysis of the binding sites for the cardiotonic phosphodiesterase inhibitor [3H]LY186126 in ventricular myocardium.
Artman M, Robertson DW, Mahony L, Thompson WJ Mol. Pharmacol. 1989 Aug 36 2 302-11
Maturation of calcium transport in cardiac sarcoplasmic reticulum.
Mahony L Pediatr. Res. 1988 Nov 24 5 639-43
Thrombolytic treatment with streptokinase for late intraatrial thrombosis after modified Fontan procedure.
Mahony L, Nikaidoh H, Fixler DE Am. J. Cardiol. 1988 Aug 62 4 343-4
Preoperative two-dimensional echocardiographic prediction of prosthetic aortic and mitral valve size in children.
Caldwell RL, Girod DA, Hurwitz RA, Mahony L, King H, Brown J Am. Heart J. 1987 Apr 113 4 873-8
Developmental changes in cardiac sarcoplasmic reticulum in sheep.
Mahony L, Jones LR J. Biol. Chem. 1986 Nov 261 32 15257-65
Role of radionuclide shunt studies in management of infants and children.
Hurwitz RA, Caldwell RL, Mahony L, Girod DA, Wellman H Clin Nucl Med 1986 Nov 11 11 781-5
Ductus arteriosus aneurysm in infancy.
Jesseph JM, Mahony L, Girod DA, Brown JW Ann. Thorac. Surg. 1985 Dec 40 6 620-2
Ventricular function in transposition of the great arteries: evaluation by radionuclide angiocardiography.
Hurwitz RA, Caldwell RL, Girod DA, Mahony L, Brown J, King H Am. Heart J. 1985 Sep 110 3 600-5


Featured Books Legend Featured Books

Honors & Awards

  • Best Pediatric Specialists/Doctors in Dallas
    D Magazine (2010) (2016-2018)
  • US News and World Report
    Top US Doctor (2011)
  • Core Clerkship Teaching Award
    Medical Student Teaching (2009)
  • William J. Rashkind Memorial Lecturer
    Cardiology 2009 Meeting, sponsored by the Children's Hospital of Philadelphia (2009)
  • Meritorious Achievement Award
    American Heart Association (2007)
  • Texas Super Doctors
    Texas Monthly Magazine (2005-2018)
  • Walter M. Kirkendall, MD, American Heart Association
    Scientist/Educator Volunteer of the Year (1995)

Professional Associations/Affiliations

  • Protocol Chair, Pediatric Heart Disease Clinical Research Network (NIH) (2011-2019)
  • Editorial Board, Circulation (2004-2009)
  • Chair, Pediatric Heart Disease Clinical Research Network (NIH) (2001-2010)
  • Dallas County Medical Society (1985-2019)
  • Texas Medical Association (1985-2019)
  • American Academy of Pediatrics (1982-2011)
  • Fellow, American Heart Association (1980-2019)