Gary D. Webb, MD

Academic Affiliation

Professor Emeritus, UC Department of Internal Medicine

Phone 513-803-2243

Fax 513-803-0079


Beginning in 1980, Dr. Webb was co-director, and then director of the Toronto Congenital Cardiac Center for Adults, the first such ACHD clinic in the world. He was the founding president of the Canadian Adult Congenital Heart Network. He was the founding president of the International Society for Adult Congenital Heart Disease. He led the first articulation and publication of clinical guidelines for adult congenital heart patients. He has edited two major texts in the field of adult congenital heart disease.

While in Cincinnati, and with the support of the Heart Institute, he established the Adult Congenital Heart Learning Center, an online source of information intended primarily for providers, but also available to patients and families.

MD: McGill University, Montréal, Québec, Canada, 1967.

Residency: Internal medicine and cardiology, University of Toronto, Toronto Ontario, Canada.

Fellowship: Royal College of Physicians and Surgeons of Canada (Cardiology), 1972; Royal College of Physicians and Surgeons of Canada (Internal Medicine), 1972; Fellow of the American College of Cardiology, 1976.

View PubMed Publications

Knowles R, Veldtman G, Hickey EJ, Bradley T, Gengsakul A, Webb GD, Williams WG, McCrindle BW.  Functional Health Status of Adults with Tetralogy of Fallot: Marched Comparison with Healthy SiblingsAnn Thorac Surg. 2012 Jul;94(1):124-32.

Webb G. The long road to better ACHD care . Congenital Heart Dis . 2010 May-Jun;5(3):198-205.

Khairy P, Aboulhosn J, Gurvitz MZ, Opotowsky AR, Mongeon FP, Kay J, Valente AM, Earing MG, Lui G, Gersony DR, Cook S, Ting JG, Nickolaus MJ, Webb G, Landzberg MJ, Broberg CS; Alliance for Adult Research in Congenital Cardiology (AARCC). Arrhythmia burden in adults with surgically repaired tetralogy of Fallot: a multi-institutional study. Circulation. 2010 Aug 31;122(9):868-75. 

Valente AM, Bhatt AB, Cook S, Earing MG, Gersony DR, Aboulhosn J, Opotowsky AR, Lui G, Gurvitz M, Graham D, Fernandes SM, Khairy P, Webb G, Gerhard-Herman M, Landzberg MJ; AARCC (Alliance for Adult Research in Congenital Cardiology) Investigators. The CALF (Congenital Heart Disease in Adults Lower Extremity Systemic Venous Health in Fontan Patients) study. J Am Coll Cardiol. 2010 Jul 6;56(2):144-50.

Silversides CK, Kiess M, Beauchesne L, Bradley T, Connelly M, Niwa K, Mulder B, Webb G, Colman J, Therrien J. Canadian Cardiovascular Society 2009 Consensus Conference on the management of adults with congenital heart disease: outflow tract obstruction, coarctation of the aorta, tetralogy of Fallot, Ebstein anomaly and Marfan's syndrome. Can J Cardiol. 2010 Mar;26(3):e80-97. 

Apitz C, Webb GD, Redington AN. Tetralogy of Fallot. Lancet. 2009 Oct;374(9699):1462-71.

Opotowsky AR, Siddiqi OK, Webb, GD. Trends in hospitalizations for adults with congenital heart disease in the US. J Am Coll Cardiol. 2009 Jul;54(5):460-7.

Schwerzmann M, Salehian O, Harris L, Siu SC, Williams WG, Webb GD, Colman JM, Redington A, Silversides CK. Ventricular arrhythmias and sudden death in adults after a Mustard operations for transposition of the great arteries. Eur Heart J. 2009 Aug;30(15):1873-9.

Hickey EJ, Veldtman G, Bradley TJ, Gengsakul A, Manlhiot C, Williams WG, Webb GD, McCrindle BW. Late risk of outcomes for adults with repaired tetralogy of Fallot from an inception cohort spanning four decades. European Journal of Cardio-thoracic Surgery. 2009 Jan;35(1):156-64.

Tzemos N, Silversides CK, Colman JM, Therrien J, Webb, GD, Mason J, Cocoara E, Sermer M, Siu SC. Late cardiac outcomes after pregnancy in women with congenital aortic stenosis. American Heart Journal. 2009;157(3):474-480.