Our Team

Management Team

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Lesley Gouldie

B.Com., B.Acc., CPA, CA
President & CEO
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Veso Tijanic

B.Sc, M.Sc.
Chief Operating Officer
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Joseph A. Fisher

MD, FRCP(C)
Founder, Chief Scientific Officer
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Robert J. Sullivan

BSc.
VP of Sales
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Tessa Mintz

MHSc, MSc.
VP of Marketing
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Drew Miller

BASc, P.Eng
VP of Product Development
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Derek Watt

P.Eng., MASc
Director of Commercial Products
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Mary-Kay Lippert

BaSC Eng, MBA, Black Belt in Lean Sigma

Director of Operations

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Olivia Sobczyk

BMSc, MSc, PhD

Director of Research

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Roger Wong

B.Sc., MBA, CPA, CGA
Director of Finance
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Mark Slonchka

B.E.E., P.Eng, PMP
Director of Quality Assurance & Regulatory Affairs

Advisory Board

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David Mikulis

MD, FRCR
Advisor
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Seemant Chaturvedi

MD, FAHA, FAAN
Advisor
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Colin Derdeyn

MD
Advisor
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Steve Iscoe

PhD
Advisor

Board of Directors

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Lesley Gouldie

B.Com., B.Acc., CPA, CA
Director
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Ludwik Fedorko

MD, PhD, FRCP(C)
Director
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Joseph A. Fisher

MD, FRCP(C)
Director
Thornhill Medical director – Wen Chen

Wen Chen

BS, MS
Director
Thornhill Medical director – Chong Wang

Chong Wang

BS, MS, PhD
Director
Thornhill Medical equipment manufacturing facility

Lesley Gouldie

A seasoned professional with over 20 years of senior leadership experience spanning Fortune 500 to start-up companies, Ms. Gouldie brings a record of financial and strategic excellence in micro-electronics, biotechnology and content creation to helm Thornhill Medical.

Veso Tijanic

With 25 years of experience in product development, including 15 medical technology-based products, Mr. Tijanic brings his deep sector-specific engineering knowledge to his role at Thornhill Medical, ensuring excellence, innovation, and rigour.

Joseph A. Fisher

As co-founder of Thornhill Medical and a world-renowned research scientist in the field of anesthesiology and cardiovascular intensive care, Dr. Fisher brings a passion for innovative product development, grounded in his original scientific work described in more than 210 peer-reviewed articles and over 40 patents, awarded and pending. He is currently a Staff Anaesthetist at the University Health Network, ensuring that clinical relevance and excellence is always at the forefront of his work.

Robert J. Sullivan

Robert J Sullivan joined Thornhill Medical as the Vice-President of Sales in 2020. Robert’s career prior to joining Thornhill Robert included numerous senior leadership roles commercializing medical devices in world markets. He has led global leadership functions in Fortune 500 firms Medtronic and Abbott Labs and in start-up/emerging firms Somanetics and Profound Medical. His developed expertise is in commercializing novel medical devices in global markets, world-wide business development and sales team leadership.

Tessa Mintz

Tessa Mintz has spent her career in organizations that share a common thread, bringing new innovations to life. Tessa has worked in all areas of these organizations, including strategy, business development, marketing, technology and client services. Prior to joining Thornhill Medical, Tessa was the principal in her own consultancy, working with a variety of technology start-ups to address the fundamental questions of defining a unique value proposition and the target market with the most immediate potential. Tessa is pleased to bring this range of experiences to her role at Thornhill Medical as it continues its exciting growth trajectory.

Drew Miller

With over 30 years of product development experience in electronics and software design, Mr. Miller brings his depth of knowledge of medical device creation to Thornhill’s product development team.

Derek Watt

Derek has been on the Thornhill Medical team since 2007, working in test engineering, product development, customer training, quality management and regulatory affairs. As Director of Commercial Products, Derek supports Thornhill’s commercial partners and customers, while developing new and exciting business opportunities and bringing innovative ideas from the field to the Thornhill Medical team.

Mary-Kay Lippert

With 20 years experience scaling Life Science companies with Operational Excellence, Mary-Kay brings a breadth of knowledge in manufacturing, supply chain, facilities, safety, process improvement and enterprise software. Outside of the office, you will find Mary-Kay at the beach with her paddle board.

Olivia Sobczyk

Dr. Olivia Sobczyk strives for excellence in the field of neuroscience and respiratory physiology and works each and every day to merge science and technology for the betterment of mankind. Dr. Sobczyk has over 11 year’s experience at Thornhill Medical creating and developing new medical technologies and clinical management solutions, from benchtop to bedside, with a focus on neurovascular disease. She obtained her PhD from the Institute of Medical Science at the University of Toronto and University Health Network, specializing in neuroimaging and neurophysiology. Olivia’s understanding of the value of commercialization of research as a tool for change, brings a whole new depth and reach to her work and makes her an invaluable member of the Thornhill Medical team.

Roger Wong

Finance leader with over 20 years of experience in the pharmaceutical, publishing and retail industries. Adept in financial analysis, budgeting/forecasting, cash flow analysis, reporting, valuation of acquisition targets, company sale and refinancing.

Mark Slonchka

With over 22 years of experience in the medical device, IVD and non-medical industries, Mark has a strong background in quality, regulatory, product development, service, and production. Mark’s experience includes responsibility for companies’ quality, regulatory affairs, and product development teams where he has implemented a full medical quality system from scratch, brought multiple products to market and achieved world-wide product approvals.

David Mikulis

Dr. Mikulis is Professor and Co-Director of Medical Imaging Research in the Department of Medical Imaging at the University of Toronto and the University Health Network. He is also Director of the Radiology Residency Research Program and Director of the Functional Imaging Research Lab. Dr. Mikulis is one of the founding members of the American Society of Functional Neuroradiology (ASFNR), and currently serves on the ASFNR Executive Committee.

Seemant Chaturvedi

Dr. Chaturvedi is Professor of Neurology at Wayne State University School of Medicine and Director of the Wayne State/Detroit Medical Center Comprehensive Stroke Program. He has co-edited the books Transient Ischemic Attacks (2004) and Carotid Artery Stenosis: Current and Emerging Treatments (2005). He was chairman of the Carotid Endarterectomy Guidelines Committee of the American Academy of Neurology, the guidelines having been published in 2005. He is currently on the steering committee of several stroke prevention studies.

Colin Derdeyn

Dr. Derdeyn is Professor of Radiology, Neurology and Neurological Surgery at Washington University and Director of the Washington University/Barnes Jewish Hospital Stroke and Cerebrovascular Center. He is a Principal Investigator for the Stenting and Aggressive Medical Management for the Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS) trial, an ongoing randomized trial of angioplasty and stenting for intracranial atherosclerotic disease. He directs the Washington University Specialized Program for Translational Research in Acute Stroke (SPOTRIAS) Center. Dr. Derdeyn also chairs the Data and Safety Monitoring Boards for two ongoing NIH-funded acute stroke clinical trials (MR Rescue and ICTus 2/3).

Steve Iscoe

Dr. Iscoe, a collaborator of Dr. Fisher since 1994, was a founding shareholder and president of one of the companies that became Thornhill Medical. A retired Professor of Physiology at Queen’s University, his research focused primarily on control of the diaphragm, particularly how respiratory loads induce cardiorespiratory failure. An associated aspect was the development of a novel blood test for detecting skeletal muscle injury. His background as a respiratory physiologist contributed to the development of the company’s breathing circuits that maintain carbon dioxide levels independent of ventilation, and to their research and clinical applications.

Ludwik Fedorko

A published researcher with expertise in cardiovascular anesthesia, heart and lung transplantation and cardiovascular intensive care, Dr. Fedorko is an invaluable senior member of the scientific team at Thornhill Medical, contributing his specialised knowledge and expertise.

Wen Chen

Mr. Chen is a Senior Vice President of Tigermed Co. Ltd., a publicly traded company located in China, dedicated to providing professional clinical development services to the pharmaceutical and medical device industries. Mr. Chen also represents Yonghua Capital, a leading private equity and venture capital investment firm from China. Mr. Chen received a Bachelor’s Degree in biochemistry from Purdue University, West Lafayette, IN and a Master’s Degree in immunology and oncology and business administration from Washington University in St. Louis and Durham University, respectively. He then worked at Amgen research before returning to work in the China biotechnology industry since 2000.

Chong Wang

As the Yonghua Vice-General Manager, Mr. Wang has over eight years of experience in medical device R&D, engineering, and product management. He brings to Thornhill Medical his extensive knowledge of and expertise in healthcare-related investment.