Dr. Zellers is an Interventional Pediatric Cardiologist involved in clinical trials of several transcatheter delivered devices for treatment of congenital and structural heart disease.

He is a Pogue Family Foundation Master Clinician in Pediatric Cardiology, Senior Vice President and Chief Clinical Officer at Children's Medical Center Plano and CHST Vice President of Medical Affairs at Children's Health. 


Medical School
UT Southwestern Medical School (1983)
University of Virginia Health System (1986), Pediatric Medicine
Mayo Clinic College of Medicine (1989), Pediatric Cardiology
Baylor College of Medicine (1997), Interventional Cardiac Catheterization

Research Interest

  • Physician leadership development
  • Quality and safety interventions in high risk babies with complex congenital heart disease
  • Transcatheter delivered devices in the treatment of congenital and structural heart disease


Featured Publications LegendFeatured Publications

Simultaneous stent implantation to treat bifurcation stenoses in the pulmonary arteries: Initial results and long-term follow up.
Stapleton GE, Hamzeh R, Mullins CE, Zellers TM, Justino H, Nugent A, Nihill MR, Grifka RG, Ing FF Catheter Cardiovasc Interv 2009 Mar 73 4 557-63
Aspirin resistance in children with heart disease at risk for thromboembolism: prevalence and possible mechanisms.
Heistein LC, Scott WA, Zellers TM, Fixler DE, Ramaciotti C, Journeycake JM, Lemler MS Pediatr Cardiol 2008 Mar 29 2 285-91
Comprehensive assessment of patent ductus arteriosus by echocardiography before transcatheter closure.
Ramaciotti C, Lemler MS, Moake L, Zellers TM J Am Soc Echocardiogr 2002 Oct 15 10 Pt 2 1154-9
Bedside balloon atrial septostomy is safe, efficacious, and cost-effective compared with septostomy performed in the cardiac catheterization laboratory.
Zellers TM, Dixon K, Moake L, Wright J, Ramaciotti C Am. J. Cardiol. 2002 Mar 89 5 613-5
Coarctation index: identification of recurrent coarctation in infants with hypoplastic left heart syndrome after the Norwood procedure.
Lemler MS, Zellers TM, Harris KA, Ramaciotti C Am. J. Cardiol. 2000 Sep 86 6 697-9, A9
Transcatheter coil occlusion of the small patent ductus arteriosus (<4 mm): improved results with a "multiple coil-no residual shunt" strategy.
Zellers TM, Wylie KD, Moake L Catheter Cardiovasc Interv 2000 Mar 49 3 307-13
Prostacyclin-induced relaxations of small porcine pulmonary arteries are enhanced by the basal release of endothelium-derived nitric oxide through an effect on cyclic GMP-inhibited-cyclic AMP phosphodiesterase.
Zellers TM, Wu YQ, McCormick J, Vanhoutte PM Acta Pharmacol. Sin. 2000 Feb 21 2 131-8
Balloon angioplasty for recurrent coarctation of the aorta in patients following staged palliation for hypoplastic left heart syndrome.
Zellers TM Am. J. Cardiol. 1999 Jul 84 2 231-3, A9
Usefulness of Doppler echocardiography in diagnosing right ventricular coronary arterial communications in patients with pulmonary atresia and intact ventricular septum and comparison with angiography.
Garcia JA, Zellers TM, Weinstein EM, Mahony L Am. J. Cardiol. 1998 Jan 81 1 103-4
Enalapril does not enhance exercise capacity in patients after Fontan procedure.
Kouatli AA, Garcia JA, Zellers TM, Weinstein EM, Mahony L Circulation 1997 Sep 96 5 1507-12

Honors & Awards

  • Texas Super Doctors
    Texas Monthly Magazine (2017)
  • Best Pediatric Specialists/Doctors in Dallas
    D Magazine (2010-2018)
  • Patient's Choice Award
    Mended Hearts Parents Group (2004)
  • Outstanding Faculty Teaching Award
    Awarded by Children’s Medical Center of Dallas (1991)
  • Second Place, Young Investigator Award
    Awarded by American Academy of Pediatrics Section of Cardiology, San Francisco, CA (1989)
  • Finalist, Young Investigator Award
    Awarded by American Academy of Pediatrics Section of Cardiology, Chicago, IL (1988)
  • Best Paper by a Resident or Fellow
    Awarded by Annual Meeting of Northwestern Pediatric Society, Bloomington, MN (1987)
  • Eli Lilly Scholar
    Awarded byWabash College (1977)

Professional Associations/Affiliations

  • Pediatric Society of Greater Dallas, Editorial Board (2008-2019)
  • Dallas County Medical Society, Board of Trustees (2007-2019)
  • Texas Medical Society (2007-2019)
  • Pediatric Society of Greater Dallas (2006-2019)
  • Congenital Cardiovascular and Intervention Study Consortium, President (2005-2016)
  • Congenital Cardiovascular and Intervention Study Consortium (2002-2019)
  • Society for Cardiac Angiography and Intervention, Fellow (1999-2019)