Senior Scientists

Salim Yusuf

Founder and Emeritus Executive Director, Senior Scientist

Salim Yusuf is an internationally renowned cardiologist and epidemiologist, whose work over 40 years has substantially influenced prevention and treatment of cardiovascular disease. Born in India, medically qualified at St. John’s Medical College, Bangalore in 1976, he received a Rhodes Scholarship and obtained a DPhil from Oxford, during which he (along with Richard Peto, Rory Collins and Peter Sleight) initiated the concepts of large, simple trials, and meta-analysis. He proposed the concept of combination drug treatment for prevention of CVD to achieve large reductions in CVD with a single pill (now called the polypill concept), but more importantly has been evaluating the concept through large randomized trials.

He leads several global studies involving more than 60 countries in every inhabited continent of the world aimed at enhancing knowledge about the biological, behavioural and societal causes, consequences, and approaches to the control of heart diseases, and strokes through large multi-country programs such as INTERHEART, INTERSTROKE, and PURE.

He holds a Heart and Stroke Foundation of Ontario Research Chair and has received (among others) the Lifetime Research Achievement award of the Canadian Cardiovascular Society; the Paul Wood Silver Medal of the British Cardiac Society; the European Society of Cardiology gold medal, the clinical Research Prize of the American Heart Association and the International Award and the Braunwald Lecture of the American College of Cardiology. He has been inducted into the Royal Society of Canada and the Canadian Medical Hall of Fame; been appointed as an Officer of the Order of Canada, and received the Canada Gairdner Wightman Award in 2014. He has received four honorary doctorates, and is among the top 20 most cited health researchers in history.

Salim Yusuf has published more than 1,000 articles in refereed journals, rising to the second most cited researcher in the world for 2011. He has mentored more than 120 scientists, several of whom are in leadership positions across the globe. He has been President of the World Heart Federation (2015-2016), where he initiated several programs (the Emerging Leaders program, road maps for CVD control and a course for training primary care practitioners in CVD prevention) aimed at halving the CVD burden globally within a generation. The World Heart Federation has recognized his contributions by naming the program the Salim Yusuf Emerging Leaders Programme.

He is a Distinguished University Professor of Medicine, McMaster University, Founder and Emeritus Executive Director of the Population Health Research Institute, and Chief Scientist, Hamilton Health Sciences.

Hertzel Gerstein

Interim Executive Director; Senior Scientist

Hertzel Gerstein is Interim Executive Director, PHRI, and our Senior Scientific Program Lead, Diabetes, as well as a Professor, Medicine, McMaster University. He is also Director of the Division of Endocrinology & Metabolism and Director of the Diabetes Care and Research Program. He has pioneered the application of large simple outcome trials to people with diabetes globally, and developed the concept of dysglycemia as an important risk factor for many of the serious health outcomes that afflict people with an elevated glucose level regardless of diabetes status. He currently leads clinical trials and epidemiological studies related to: a) the prevention and therapy of diabetes and its many consequences, and b) the role of dysglycemia and relative insulin insufficiency on the development of diabetes, cardiovascular disease, cognitive impairment and other chronic conditions. Key studies in which he has played or continues to play a major leadership role include HOPE, MICRO HOPE, ACCORD, DREAM, EpiDREAM, ORIGIN, TIDE, ACE, ELIXA and REWIND.

Hertzel Gerstein has published more than 300 papers, editorials and commentaries, mainly on diabetes-related issues and co-edited the textbook Evidence-Based Diabetes Care. He is an Associate Editor for ACP Journal Club, and is on the editorial board of the Journal of Diabetes and Lancet Diabetes and Endocrinology. He has received several honors including the Canadian Diabetes Association’s Young Scientist Award (1999), Frederick G. Banting award (1999), Charles H. Best award (2007) and Lifetime Achievement Award (2012).

Sonia Anand

Senior Scientist

Sonia Anand is a Professor, Medicine and Epidemiology at McMaster University; Associate Chair, Diversity and Equity in McMaster’s Department of Medicine; Director of McMaster’s Population Genomics Program; inaugural Chair, Equity, Diversity and Inclusion (EDI) Committee of the Canadian Cardiovascular Society; and Director, Chanchlani Research Centre for Global Health at McMaster, among other roles.

Her present research focuses upon the environmental and genetic determinants of vascular disease in populations of varying ancestral origin, women and cardiovascular disease. Sonia has published more than 200 articles in peer review journals. Shas been inducted into the Canadian Academy of Health Sciences, and received the Queen Elizabeth II Diamond Jubilee Medal.

Shrikant Bangdiwala

Director, Statistics; Senior Scientist

Shrikant Bangdiwala, PhD, has extensive experience in the design, conduct and analysis of multi-center observational and experimental studies, having worked on clinical and community-based randomized controlled trials in congestive heart failure, cardiovascular risk factors, functional bowel disease, and obesity prevention. His statistical research interests include non-parametric methods, methodology for clinical trials, reliability and validity of diagnostic tests, and graphical methods for descriptive analyses.

A Professor in McMaster University’s Department of Health Research Methods, Evidence and Impact, he is a former Fulbright senior specialist in global public health, and holds faculty positions in universities in Chile, South Africa and India.

He is a member of the USA NIH National Institute of Allergy and Infectious Diseases (NIAID) “COVID-19 Preventive mAb Data and Safety Monitoring Board” (DSMB) that will be reviewing and monitoring the US government-supported clinical trials of candidate preventive monoclonal Antibodies for SARS-CoV-2 and COVID-19. He also chairs the Multinational DSMB for the division of AIDS at NIH, and is a member of the Gastrointestinal Drugs Advisory Committee of the FDA.

PJ Devereaux

Deputy Director, Senior Scientist

PJ Devereaux is Deputy Director, Senior Scientific Lead, Perioperative and Surgery, PHRI, Professor and University Scholar in the Departments of Health Research Methods, Evidence, and Impact (HEI) and Medicine at McMaster University, and Director of the Division of Cardiology at McMaster.

The focus of his clinic research is vascular complications around the time of surgery, leading several large, international RCTs and observational studies addressing this issue. He has published more than 250 peer-reviewed papers and more than 50 book chapters and editorials. He is supported by a Tier 1 Canadian Research Chair in Perioperative Medicine, and holds the Yusuf Chair in Cardiology at McMaster University.

John Eikelboom

Senior Scientist

John Eikelboom is Associate Professor in the Department of Medicine, McMaster University, and a haematologist in the Thrombosis Service, Hamilton General Hospital. He originally trained in Internal Medicine and Haematology in Perth, Australia and subsequently moved to Hamilton to take up a Tier II Canada Research Chair in Cardiovascular Medicine.

He has co-authored more than 350 articles in peer-reviewed journals. His current research, supported by the Canadian Institutes for Health Research, the Heart and Stroke Foundation and the National Health and Medical Research Council of Australia, focuses on the efficacy and safety of antithrombotic therapies, outcomes after blood transfusion and bleeding, and the mechanisms of variable response to antiplatelet drugs.

Robert Hart

Senior Scientist

Robert Hart is Professor of Medicine (Neurology) at McMaster University and a vascular neurologist at Hamilton Health Sciences. After completing a fellowship in cerebrovascular disease at the Oregon Health Sciences University, he spent most of his career at the University of Texas Health Science Center in San Antonio before relocating to McMaster University in September 2011.

He has a long-standing interest in stroke, stroke research, and clinical trials. He has directed several randomized clinical trials serving as the principal investigator of the NIH/NINDS-sponsored Stroke Prevention in Atrial Fibrillation (SPAF) I, II and III trials (1987-2000) and co-principal investigator of the NIH/NINDS-sponsored Secondary Prevention of Small Subcortical Strokes (SPS3) randomized trials (2001-2013). Antithrombotic therapies to prevent stroke in atrial fibrillation and especially novel oral anticoagulants are areas of special interest. He has published more than 250 articles in peer-reviewed journals.

Jeff Healey

Senior Scientist

Jeff Healey is a Senior Scientist in the Arrhythmia and Heart Failure research program at PHRI, an Associate Professor, Medicine, McMaster University, and Director of Arrhythmia Services at Hamilton  Health Sciences. His research involves conducting RCTs and large registries in the fields of atrial fibrillation and cardiac devices. He was the lead author of the SIMPLE trial, published in the Lancet in 2015, which demonstrated that implantable defibrillators could be safely inserted without performing intra-operative defibrillation testing.

He was the lead author of the ASSERT trial, published in New England Journal of Medicine in 2012, demonstrating the increased stroke risk associated with sub-clinical atrial fibrillation detected by pacemakers. Thomson-Reuters recognized ASSERT as the 38th most-cited scientific publication in 2012 (#16 in Medicine).

He was principal investigator and chair of the Canadian Stroke Prevention Intervention Network (CSPIN), a ten-year network grant funded by the Canadian Institutes of Health Research, The Heart and Stroke Foundation of Canada and Industry. He is the past co-chair of the Canadian Cardiovascular Society’s Atrial Fibrillation Guidelines Committee. Jeff has published more than 185 manuscripts.

Eva Lonn

Senior Scientist

Eva Lonn is a Principal Investigator for the Atherosclerosis Imaging and Cardiovascular Prevention programs at PHRI, and  a Professor of Medicine in the Division of Cardiology at McMaster University.

She has led several large international trials and was a member of the International Steering Committee of additional landmark cardiovascular prevention trials. She directed the Vascular Research Ultrasound Laboratory at PHRI for more than 20 years. She served for many years on the Canadian Cardiovascular Society Council and Executive Committee. She has received research grants from the Medical Research Council of Canada, the Canadian Institutes of Health Research and the Heart and Stroke Foundation of Canada. She published over 220 peer reviewed articles, and 8 book chapters.

After obtaining her medical degree from the Hebrew University in Jerusalem, Eva Lonn completed clinical training in Internal Medicine, Cardiology and Advanced Imaging at the University of Toronto and research fellowships at the University of Toronto and at McMaster University, where she obtained also a Master of Science degree in Health Research Methodology.

Shamir Mehta

Senior Scientist

Shamir Mehta is a Senior Scientist with the Acute Coronary Syndrome and Interventional Cardiology research program at PHRI, a Professor of Medicine at McMaster University, and Director of the Interventional Cardiology program at Hamilton Health Sciences. His research focuses on the role and timing of invasive therapies in patients with acute ischemic heart disease, and the evaluation of novel antiplatelet and anticoagulant therapies in these patients.

He has led several large pragmatic randomized trials evaluating invasive interventional strategies in patients with acute coronary syndromes. He has also lead multinational randomized trials evaluating novel antiplatelet and anticoagulant therapies to improve outcomes in patients experiencing a heart attack.

Shamir Mehta has published 127 original research papers in several medical journals including The New England Journal of Medicine, The Lancet, JAMA, and Circulation. His success in research has earned him a coveted Canada’s Top 40 under 40TM award in 2004, and he has received a Canadian Institutes of Health Research New Investigator Career Award.

Guillaume Paré

Director, CRLB- GMEL; Senior Scientist

Guillaume Paré is Director of the Clinical Research Laboratory and Biobank (CRLB) – Genetic and Molecular Epidemiology Laboratory (GMEL). He is also Deputy Director of the Thrombosis and Atherosclerosis Research Institute (TaARI), a Professor of Pathology and Molecular Medicine, a Professor in the Department of Health Research Methods, Evidence and Impact, and a University Scholar at McMaster University. He holds the Cisco Professorship in Integrated Health Biosystems.

His clinical interests are centered on lipoprotein disorders, obesity and cardiovascular disease prevention, with research interests in cardiovascular genetics, biomarker development and pharmacogenomics. Gui’s research combines high-throughput biomarker screens with genetics, bioinformatics and epidemiology to identify novel cardio-metabolic biomarkers. He has published more than 200 papers and has been cited over 27,000 times.

A medical biochemist with board certification from the Royal College of Physicians and Surgeons of Canada, Gui completed a Master’s in Human Genetics at McGill University under the supervision of renowned geneticist Thomas Hudson. He further trained in genetic epidemiology with Paul Ridker at Harvard Medical School.

Koon Teo

Emeritus Scientist

Koon Teo is a Professor of Medicine, Division of Cardiology, McMaster University, and provides senior leadership to PHRI’s direction and research studies. He has served as the acting director of the Division of Cardiology at McMaster University and Hamilton Health Sciences, and Chief of Cardiology, McMaster University Medical Centre. His wide range of work includes 16 book chapters, 356 articles and 280 abstracts featured in more than 15 medical journals worldwide.

He was the Canadian Principal Investigator for the COURAGE trial the results of which impact the practice of cardiology worldwide, and for the Canadian Institute for Health Research funded ongoing FAMILY study examining the origins of obesity and cardiometabolic risk factors in early childhood. He is also co-principal investigator of The International Polycap Study (TIPS).

Ashkan Shoamanesh

Senior Scientist

Ashkan Shoamanesh is an Associate Professor of Medicine (Div. of Neurology) and a stroke neurologist at McMaster University, where he holds the Marta and Owen Boris Chair in Stroke Research and Care. He is the founding Director of the Hemorrhagic Stroke Research Program and a Senior Scientist at the Population Health Research Institute in Hamilton, Canada. Shoamanesh’s clinical trials program focuses on advancing treatment and establishing new standards of care to prevent stroke or reduce stroke-related death and disability. He is the principal investigator (PI) or Co-PI of multiple international multicentre randomized trials, including ENRICH-AF (NCT03950076; Lancet 2023), OCEANIC-STROKE (NCT05686070), SATURN-MRI (NCT03936361) and CoVasc-ICH (NCT05159219). He has also held central leadership roles in the ANNEXa-I (NEJM 2024), PACIFIC-STROKE (Lancet 2022) and NAVIGATE-ESUS (NEJM 2018) trials. Shoamanesh is the founding Chair of the Canadian Hemorrhagic Stroke Trials Initiative (CoHESIVE; www2.phri.ca/CoHESIVE) and was the lead author of the first Canadian Stroke Best Practice Recommendations on the Management of Spontaneous Intracerebral Hemorrhage.

Shoamanesh has published over 170 peer-reviewed manuscripts in top-tier scientific journals. He serves on the editorial boards of Stroke, the International Journal of Stroke, and the Canadian Journal of Neurological Sciences. He is an active contributor to international scientific meetings and previously co-chaired the World Stroke Congress (World Stroke Organization) and the World Intracranial Hemorrhage Conference.

His research program receives funding from several bodies, including the Canadian Institutes of Health Research, National Institutes of Health, Heart and Stroke Foundation of Canada, Brain Canada, the Australian Government Medical Research Future Fund, British Heart Foundation, and multiple industry partners. His contributions have been recognized with numerous accolades from international organizations, such as the American Academy of Neurology (Pessin Award), American Heart/Stroke Association (Globus Award, Siekert Award, Dudley White Award), American Neurological Association (Denny-Brown Award), European Stroke Organization (Young Investigator Award, Scientific Excellence Award), Heart and Stroke Foundation of Canada (National New  Investigator Award, Barnett Scholarship) and the World Stroke Organization (Future Leaders Program).

Darryl Leong

Senior Scientist

Darryl Leong is a Scientist at PHRI, Director of the McMaster University and Hamilton Health Sciences Cardio-Oncology Program, Associate Professor, Department of Medicine (Cardiology), McMaster University, and Staff Cardiologist at Hamilton Health Sciences. He has methodological expertise in clinical epidemiology and clinical trials, and content expertise in physical frailty, echocardiography, and cardio-oncology. His research is supported by the CIHR, and he has published more than 150 manuscripts including all the leading internal medical and cardiovascular journals.

He graduated from the University of Adelaide Medical School with Deans Listing and Honours for academic excellence, completed his cardiology training, Doctor of Philosophy, Master of Public Health, and Master of Biostatistics degrees at the University of Adelaide in Australia, and completed a post-doctorate fellowship in cardiovascular imaging at the Leiden University Medical Centre in The Netherlands, before re-locating to Canada.

David Conen

Senior Scientist

David Conen is a Scientist at PHRI, which he joined in 2016, and an Associate Professor, Department of Medicine, McMaster University. A trained internist and cardiologist from Basel, Switzerland, he obtained a Master of Public Health degree from Harvard University.

His research activities involves the conduct of large epidemiological cohort studies to study risk factors for the occurrence of atrial fibrillation and its consequences, and research into therapies to prevent and treat perioperative atrial fibrillation. David is the Co-Principal Investigator of a large national cohort study to assess the relationship between atrial fibrillation and cognitive decline in Switzerland (Swiss-AF). He has published more than 130 peer-reviewed manuscripts in leading scientific journals as well as several reviews and editorials.

Harriette Van Spall

Senior Scientist

Harriette Van Spall is a Scientist for the Arrhythmia and Heart Failure research program and the Knowledge Translation and Health Systems program at PHRI, an Associate Professor, Department of Medicine (cardiology) at McMaster University. Her research, supported by CIHR and the Ministry of Health, is in quality of care and outcomes, knowledge translation, and health systems improvement pertaining to heart failure. She has won several research awards, and her work has been published in high-impact medical journals, including JAMA, Lancet, Circulation, and Annals of Internal Medicine.

She earned her Doctor of Medicine degree from the University of Toronto, and a Master of Public Health degree from the Harvard School of Public Health. She completed postgraduate training in Internal Medicine, Cardiology, and Echocardiography at the University of Toronto.

Michael Walsh

Senior Scientist

Michael Walsh is a Principal Investigator in the Renal research program at PHRI, and an Assistant Professor, Department of Medicine (nephrology), McMaster University. His research activities are in the areas of the treatment of patients who require dialysis, severe glomerular disease, and perioperative acute kidney injury. He has published more than 70 papers and two book chapters.

He holds a Kidney Research Scientist Core Education and National Training (KRESCENT) Program New Investigator award through CIHR and the Kidney Foundation of Canada.  He’s received multiple Top Abstract awards from the Canadian Society of Nephrology, the Chalmers Prize from the Society for Clinical Trials, and the Detweiller Traveling Scholar Award from the College of Physicians and Surgeons of Canada.