Our Doctors

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Dr. Kristen Chen

Bio coming soon!

Dr. Robert Chun

Bio coming soon!

Dr. Jeremy Cohen

Dr. Jeremy I. Cohen, BASc, MD, FRCPC, FACC, is a staff cardiologist at Southlake Regional Health Centre and Southlake Heart Function Clinic. He specializes in general adult cardiology. He has additional expertise and interest in the management of critically ill patients in the cardiac care unit and in the optimal delivery of advanced cardiac critical care.

Dr. Cohen received a bachelor of applied science in biomedical engineering in 2004 and his medical degree in 2008, both from the University of Toronto. He completed his internal medicine residency in 2011 and his cardiology fellowship in 2014 at McMaster University. He subsequently completed a 1-year critical care fellowship at the University of Toronto in 2015. Dr. Cohen is a Fellow of the Royal College of Physicians of Canada in both internal medicine and cardiology. He is also a Fellow of the American College of Cardiology. He holds additional certification in both echocardiography and nuclear cardiology by the National Board of Echocardiography and the Certification Board of Nuclear Cardiology respectively.

Dr. Bradley Dibble

Dr. Bradley J. Dibble, MD FRCPC FACC attended medical school at the University of Western Ontario where he graduated in 1990. He completed specialty training in Internal Medicine followed by Cardiology in London, and then completed a six month position as a Clinical Assistant for the Department of Cardiology at Victoria Hospital. He opened his practice in Barrie, Ontario in 1996 and also joined the team at Southlake in 2000 where he works in the Cardiac Catheterization Laboratory. He has a broad-based practice in clinical cardiology with a particular interest in preventative medicine and risk factor modification. He is a regional spokesperson for the Heart and Stroke Foundation of Ontario. He was also the Physician Lead for the Division of Cardiology and Medical Director of the Cardiovascular/Renal Program at Royal Victoria Regional Health Centre from 2012 to 2017.


Dr. Atoosa Enzevaei

Bio coming soon!

Dr. Peter Lugomirski

Dr. Peter Lugomirski is a cardiologist at Southlake Regional Health Centre. He has additional expertise in cardiac intensive care. As a cardiac intensivist, he uses a systematic approach and rounded skills in the management of critically ill cardiac patients. His office-based practice focuses on all aspects of general cardiology including congestive heart failure, valvular, aortic and pericardial disease. He also has interests in cardiac imaging such as echocardiography, stress echocardiography and nuclear cardiology. Dr. Lugomirski received his medical degree from McMaster University in 2010. He completed internal medicine at the University of Toronto in 2013 and cardiology at the University of Ottawa Heart Institute in 2016. He completed sub-specialization in cardiac intensive care at the Cleveland Clinic in 2017. He has been on staff with Southlake Regional Health Centre since 2017.

Dr. H. Tristan Nuri

Dr. H. Tristan Nuri, BSc, MD, FRCPC received a bachelor’s degree from the University of Toronto, followed by a medical degree from Saba University and internal medicine training at the University of South Dakota. He then completed his cardiology fellowship at the University of Saskatchewan where he served as a chief cardiology fellow. He joined the faculty at the University of Saskatchewan in 2013 as both a staff cardiologist and a clinical associate professor. With a focus on medical education, he was a member of the University of Saskatchewan cardiology residency committee as a research coordinator.

Dr. Nuri joined PACE in 2015 as a staff cardiologist. His practice includes all aspects of general cardiology with a special interest in heart failure and valvular heart disease.

Dr. Liane Porepa

Dr. Liane Porepa is a staff cardiologist at Southlake Regional Health Centre and Southlake Heart Function Clinic. Her practice consists of community-based general cardiology with a focus on advanced heart failure and valvular heart disease. She has experience in the management of patients with rare forms of cardiomyopathy (ie. cardiac amyloidosis, cardiac sarcoidosis, chemotherapy-induced cardiomyopathy, and peripartum cardiomyopathy). She has particular expertise in the care and management of patient’s with left ventricular assist devices (LVADs) and critical care cardiology. In addition to general cardiac imaging, she performs right heart catheterizations (congestive heart failure and pulmonary hypertension), endomyocardial biopsy, and diagnostic coronary angiography.

Dr. Porepa received her medical degree from the University of Toronto (2006). She completed her Internal Medicine Residency at the University of Toronto (2006-2009) and Cardiology Residency at the University of Western Ontario (2009-2012). She subsequently completed a fellowship specializing in Advanced Heart Failure, Cardiac Transplantation and Mechanical Circulatory Support at the Cleveland Clinic Foundation in Cleveland, Ohio (2012-2013).

Dr. John Symmes

Dr. John (Jack) Symmes MD, FRCP, FACC graduated from the University of Toronto medical School in 1973. He completed his training in Internal Medicine and Cardiology in 1977 with an additional year of training in Intensive Care medicine. Dr. Symmes joined the staff of York County Hospital (now Southlake Regional Health Centre) in 1978 as the only cardiologist between Toronto and Sudbury Ontario.
Dr. Symmes has played an instrumental role in the advancement of cardiac care in York Region. He has served in many roles at Southlake including Chief of Medicine (1982-1986), Co-Director of the Intensive and Cardiac Care units and later as Physician leader of the Cardiac Program (1997-2000), pioneering the establishment of the full service Regional Cardiac Care Program in 1998 which became fully developed in 2003.
His experience is extensive in general cardiology with a focus on development of the Cardiac Rehabilitation Program, the Lipid Clinic and the Chest Pain Clinic.
Dr. Symmes current interest includes establishing a clinic for Primary Cardiac Prevention providing an emphasis on cardiac evaluation and risk reduction strategies.

Dr. Molly Thangaroopan

Dr Molly Thangaroopan is a staff Cardiologist at Southlake Regional Health. She is a community-based cardiologist with a practice specializing in General Cardiology and non-invasive cardiac imaging including Echocardiography, stress echocardiography, nuclear cardiology and advanced cardiac imaging, cardiac CT and cardiac MRI. Specific interests include primary and secondary preventative Cardiology, management of patients with valvular heart disease and heart disease in women. She also has a special interest in Adult congenital heart disease.

Dr Thangaroopan received her M.D. from Dalhousie University and completed her Internal Medicine residency at University of Western Ontario, London. She then completed her Cardiology residency at the University of Alberta. She has obtained fellowship training in Echocardiography at the Toronto General Hospital, University of Toronto, specializing in stress echocardiography, transesophageal echocardiography, and 3D echocardiocardiography with Level 3 certification. She then went on to Boston, Massachussetts to complete a fellowship in cardiac coronary CT angiography and cardiac MRI at the Massachussetts General Hospital, Harvard Medical School. She has been a staff Cardiologist with the Division of Cardiology at Southlake Regional Health Centre since 2007.

Dr. W. Shane Williams

W. Shane Williams MD FRCP(C) was born and raised in Newfoundland. Dr. W. Shane Williams attended Memorial University of Newfoundland (MUN) in St. John’s, NL, where he first obtained his Bachelor of Science in Pharmacy B.Sc. (Pharm). He then completed his 4 year Doctor of Medicine (M.D.) degree and 3 year post-graduate fellowship training program in Internal Medicine at Memorial University, as well. He subsequently went on to complete a 3 year Cardiology Subspecialty Fellowship Training Program at McMaster University in Hamilton, ON. In 2008, he opened his private Cardiology practice and since then has taken a particular interest in helping patients in the prevention of cardiovascular and other chronic diseases. One of the main ways he achieves this is by creatively educating motivated patients and helping them better understand how their lifestyle choices are often affecting their disease risk, as well as their established conditions. Once patients better understand this link, many of them are much more motivated to help themselves by making better lifestyle choices. Dr. Williams can then further coach and support them during this important transition phase. Dr. Williams believes that developing a strong partnership and trust with each patient is key to being able to educate and support them towards better health.

Dr. Yaariv Khaykin

Dr. Yaariv Khaykin graduated from medical school in Toronto in 1996 and completed his Internal Medicine and Cardiology training in Toronto. From 2002-2004 he trained in electrophysiology at the Cleveland Clinic. In 2004 Dr. Khaykin returned to Southlake Regional Health Centre to start the Atrial Fibrillation and Complex Ablation program, which has proven to be one of the most successful in the country. His clinical expertise includes coronary angiography, electrophysiology studies and ablation procedures, pacemaker, ICD and CRT implantation, and laser lead extraction. Recognized throughout North America as an expert in his field, Dr. Khaykin has a number of publications in leading journals with research interests involving multicentre controlled trials comparing methods of AF and VT ablation, 3D and ultrasound guidance of ablation, novel antiarrhythmic agents, and health economics.

Dr. Kevin Michael

Dr. Michael graduated from the University of Natal in South Africa with a Bachelors of Medicine and Surgery (MBChB), and a Master’s in Cardiology (MPhil) from the University of Cape Town. He trained in Internal Medicine and Cardiology at King Edward the VIII Hospital and Groote Schuur Hospital in South Africa. He was admitted as a Fellow of the College of Physicians in 2001, and was awarded his Certification in Cardiology in 2004. He completed a research fellowship at Southampton University’s Hospital in the United Kingdom and completed a clinical fellowship in Cardiac Electrophysiology at Queen’s University in 2009. He was awarded his Doctorate in Medicine from the University of Cape Town in 2013 for his thesis examining defibrillation vectors and waveforms. Dr Michael was appointed as assistant professor in the Department of Medicine at Queen’s University, Ontario, Canada and thereafter promoted to Associate Professor attached to the Heart Rhythm Service – Kingston Health Sciences. He also serves as a consultant electrophysiologist at the Heart Rhythm Management centre at Westville Life Hospital in Durban, South Africa. He retains an interest in complex ablation and cardiac defibrillation and pursues research both in a basic science and clinical capacity.

Dr. Alfredo Pantano

Dr. Pantano completed his medical degree at Universidad Nacional de Cordoba, his training in Internal medicine and Cardiology at Hospital San Roque Cordoba, Argentina. He then specialized in Cardiac Electrophysiology at Royal Jubilee Hospital in Victoria British Columbia, Canada.

Current position: Associate Staff Cardiologist – Electrophysiologist at Southlake Regional Health Centre, Ontario. His practice consist in community base general cardiology and cardiac electrophysiology including complex ablation for atrial fibrillation, ventricular tachycardia, pacemaker and implantable cardiac defibrillators.

Previous position 2004 to 2011: Staff Cardiologist, Assistant Professor at the University of Alberta. Director of the Electrophysiology Fellowship Program, and leader of the Remote Magnetic Navigation System, Stereotaxis laboratory at Alberta Heart Institute, in Edmonton, Alberta, Canada.

Dr. Bernice Tsang

Dr. Tsang is a staff cardiologist at Southlake Regional Health. She has a practice focus on clinical electrophysiology, pacing, defibrillator therapy and cardiac resyncrhonization therapy.

Having originally completing her medical degree in British Columbia, she has completed her internal medicine training at Queens University, cardiology at McMaster University and electrophysiology at St. Michaels Hospital of the University of Toronto.

Dr. Atul Verma

Dr. Atul Verma is a staff cardiologist/cardiac electrophysiologist at Southlake Regional Health Care Centre in Newmarket, Ontario, Canada. His practice specializes in general cardiology and cardiac electrophysiology and consists of both patient care and active clinical research. In addition to general cardiology testing, Dr. Verma performs coronary angiography, pacemaker/defibrillator implants, and cardiac ablations. Specific interests include complex ablation, particularly the ablation of atrial fibrillation and ventricular tachycardia.

Dr. Verma completed his medical school and cardiology residency training at the University of Toronto. He then specialized in cardiac electrophysiology at the Cleveland Clinic in Cleveland, Ohio, USA.

He is a community-based cardiologist who is also doing clinical research and involved with national and international guidelines. He is cross-appointed with the University of Toronto and McGill University.

Dr. Zaev Wulffhart

Dr. Zaev Wulffhart, MB BCh., F.A.C.C., F.R.C.P. (Cardiology & Internal Medicine), is the Chief of Cardiology and Medical Director of the Heart Rhythm programme at Southlake Regional Health Centre.

Dr. Wulffhart obtained his medical degree and completed his internship in Johannesburg, South Africa in 1984. He arrived in Canada in 1986 and over a six-year period, he pursued his training in internal medicine and cardiology in Newfoundland’s Memorial University and at Nova Scotia’s Victoria General Hospital. Dr. Wulffhart was then awarded the Electrophysiology Fellowship at St. Michael’s Hospital in Toronto from July 1992 to June 1993. He joined the faculty at the University of Toronto in 1993. From July 1993 to July 1996, he served as a Staff Cardiologist and Director of the Pacemaker Program at Wellesley Hospital. He then joined Sunnybrook & Women’s College Health Sciences Centre (SWCHSC) as an Assistant Professor and active Staff Cardiologist. During his five-year tenure at SWCHSC he served as Deputy Director of the Cardiac Catheterization Lab, and Director of Arrhythmia Services up to September 2001.

Dr. Wulffhart joined Southlake Regional Health Centre in October 2001 and since then his main goal was to position Southlake in the forefront of providing excellent and comprehensive arrhythmia services including teaching and research in a community-based regional health centre. Dr. Wulffhart is currently the Chief of Cardiology, Medical Director of the Heart Rhythm Program and Director of Medical Education.

Dr. Anil Yadav

Dr. Anil Yadav, MD, FRCPC FACC FHRS, is a native of Toronto and obtained his undergraduate education and medical degree at the University of Western Ontario. Thereafter he completed Internal Medicine training at the University of Toronto and his cardiology fellowship at the University of Texas SouthWestern Medical Center in Dallas, Texas. He further specialized in the field of cardiac electrophysiology by completing his cardiac EP fellowship with his mentor Dr. Melvin Scheinman at the University of California, San Francisco.
Dr. Yadav was recruited thereafter by Dr. Zipes at Indiana University School of Medicine. Dr. Yadav developed a large clinical cardiac electrophysiology practice and rose to the rank of Associate Professor of Clinical Medicine. He has published over 20 manuscripts, abstracts and book chapters and garnered several teaching awards at Indiana University School of Medicine. He is also fellow of the Heart Rhythm Society and was a member of the editorial board of the leading journal in cardiac EP Heart Rhythm for over a decade.
Dr. Yadav now returns to his native Toronto and is working at Pace Cardiology in affiliation with Southlake Hospital to continue expanding EP services to patients in York Region. His clinical interests include all aspects of cardiac electrophysiology including implantation and management of cardiac rhythm devices (including pacemakers, defibrillators, cardiac resynchronization devices), catheter ablation of both supraventricular and ventricular arrhythmias. In addition, a comprehensive cardiac EP consultative service will also be developed to serve the growing need of the region and improve access and timely delivery of cardiac care.

Dr. Warren Cantor

Dr. Warren J. Cantor, MD, FRCPC, received his medical degree at the University of Western Ontario in London, Ontario in 1991. He then completed his postgraduate internal medicine and cardiology training at the University of Toronto. After a clinical fellowship in interventional cardiology in Toronto, he pursued a two-year research fellowship at Duke University Medical Center, North Carolina. After completing the fellowship, he worked as Staff Interventional Cardiologist and Associate Director of the Cardiac Catheterization Laboratory at St. Michael’s Hospital in Toronto from 2000 to 2005. He is currently a Staff Interventional Cardiologist and Medical Director of the Interventional / Invasive Program at Southlake. He is also a full Professor of Medicine at the University of Toronto.

Dr. Lorne Goldman

Dr. Lorne Goldman, MD, FRCPC, Interventional Cardiologist, received his Medical Degree from McGill University in 1994. He completed his Internal Medicine and Cardiology residencies at McGill followed by a fellowship in Interventional Cardiology at St. Michael’s Hospital in Toronto. He worked as an Interventional Cardiologist in Spokane, WA for 2 years prior to coming to the Southlake Regional Health Centre in 2003.

Dr. Steven Miner

Bio coming soon!

Dr. Sylvain Plante

Dr. Sylvain Plante received his medical degree at the University of Sherbrooke (QC) in 1983. He completed his postgraduate internal medicine and cardiology training at the University of Sherbrooke and at the University of Montreal. After completing a clinical fellowship in interventional cardiology and an experimental research fellowship at the Thoraxcenter, Erasmus University in Rotterdam (Netherlands), he worked as an interventional cardiologist at the CHU in Sherbrooke from 1990 to 1993, and at the Heart and Lung Institute in Quebec City from 1993 to 2003. From 2003 to 2007, he was the Medical Director of the Percutaneous Coronary Intervention (PCI) Program at Southlake Regional Health Centre, where he performed the first procedure.

Dr. Plante has more than 20 years of experience in the field of coronary angioplasty. He has performed thousands of procedures and he has been a pioneer in radial artery access (artery of the wrist) for angioplasty. He has published several articles in medical journals.

Languages: French, English

Dr. Manu Prabhakar

Bio coming soon!

Dr. John MacFadyen

Dr. MacFadyen, M.D., FRCPC attended the University of Western Ontario and graduated from Medicine in the class of 1987. He continued his fellowship in General Internal Medicine at UWO and completed a Master’s Degree of Health Professional Education at the University of Illinois at Chicago. He has practiced Internal Medicine in Orillia since 1998 and is currently the Medical Director for the Multidisciplinary Clinic in Diabetes as well as the Director of the Heart Function Program in Orillia. He was a member of the Canadian Diabetes Association 2013 Guidelines Committee and co-authoured the chapter on “Diabetes and Heart Failure”.

Dr. Rajat Kumar

Bio coming soon!

Dr. Michael Gollob

Dr. Gollob obtained an undergraduate degree in molecular genetics at the University of Toronto, graduating as a Gold Medalist in 1990. He then entered the field of medicine and is now an arrhythmia specialist with a clinical practice at PACE Cardiology and the Toronto General Hospital. He also has an appointment in the Department of Physiology at the University of Toronto. Dr. Gollob’s clinical practice is focused on genetic-based arrhythmia and cardiomyopathy syndromes, including atrial fibrillation, Long QT syndrome, Brugada Syndrome, CPVT, Short QT syndrome, unexplained sudden death, arrhythmogenic cardiomyopathies and hypertrophic cardiomyopathy.

Dr. Gollob’s research group studies the genetic and physiological basis of sudden death syndromes, the common arrhythmia of atrial fibrillation, and cytoskeletal or metabolic based cardiomyopathy conditions. His research laboratory has identified genes causative for sudden death and atrial fibrillation, and he has published his research in high impact journals including the New England Journal of Medicine, Circulation and Nature. He has Chaired on behalf of the Canadian Cardiovascular Society the first guideline document outlining the appropriate use of genetic testing for cardiac diseases associated with a risk of sudden death. He is currently the Chair of the National Institutes of Health funded Clinical Genome Resource Channelopathy Working Group which has led to recent publications clarifying the genetic causes of Long QT syndrome and Brugada Syndrome.

Dr. Gollob holds peer-reviewed research funding from the Canadian Institutes for Health Research (CIHR).
View publications.