Our mission is to improve healthcare for people through safe, usable and effective technologies and processes.

Our vision is a healthcare system that at every stage in its process, is informed by human factors principles.

We are one of the largest teams dedicated to human factors in healthcare internationally. Uniquely, we are fully integrated into one of the largest academic health centers in the world, the University Health Network (UHN). Located within Toronto General Hospital, we are embedded in the healthcare setting with unparalleled access to the clinical users and patients that we create, design, and test for.

Since our inception ten years ago, we’ve grown into
 a team of over 20 human factors professionals, including clinical engineers, cognitive psychologists, user experience specialists, visual and industrial designers, and academic researchers. This growth has allowed us to advocate broadly and directly with industry for a different kind of healthcare system, informed and transformed by human factors-based design.


Joseph Cafazzo PhD PEng

Executive Director
Associate Professor, Faculty of Medicine, University of Toronto

Dr. Joseph Cafazzo is Executive Director of Healthcare Human Factors, UHN and Lead for the Centre for Global eHealth Innovation, a state-of-the-art healthcare-focused usability facility. The Healthcare Human Factors Group is the largest group of its kind devoted to the application of human factors engineering to problems of healthcare delivery and patient safety.

Dr. Cafazzo has been active in the user-centered design of new systems and ethnographic research related to nursing workflow and new modes of nursing care mediated by technology. He has advised and conducted research for public sector policy makers and private sector medical technology companies on the design and safety of technology in healthcare.

He is Associate Professor in the Department of Health Policy, Management and Evaluation, and the Institute of Biomaterials and Biomedical Engineering, Faculty of Medicine, University of Toronto, where he teaches and conducts research in the areas of human factors, clinical engineering, and health informatics.

In 2010 he was the recipient of the Career Scientist award by the Ontario Ministry of Health and Long Term Care. Dr. Cafazzo presented at TEDx Toronto 2012 on innovative technologies that allow for patient self-care at home.

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Anjum Chagpar MHSc PEng

Managing Director

As a founding member of Healthcare Human Factors, Anjum was instrumental in designing the state of the art Usability and Simulation labs at the Centre for Global eHealth Innovation, and growing the team to the largest of its kind in North America. Anjum has over ten years experience designing, building and evaluating medical devices and health information technology using user-centred methods. In addition she has consulted on hospital process and environment redesigns and patient safety research.

Anjum holds degrees in Systems Design Engineering from the University of Waterloo and Clinical Engineering from the Institute of Biomaterials and Biomedical Engineering at the University of Toronto.

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Wayne Ho MEng

Managing Principal

Wayne Ho is currently the Managing Principal of Healthcare Human Factors. In the past 15 years he has focused on the interaction between people and technology as an Interaction Designer and Usability Specialist. He is passionate about improving the design of software, devices, and processes in healthcare.

Wayne joins the team from IBM where he was the User Experience Lead for the family of IBM Rational Quality Management software solutions. In that role, he led a multi-disciplinary team of software developers, product managers, executives, and human factors professionals through a user-centered design process.

Wayne holds a BASc in Systems Design Engineering at the University of Waterloo and a MEng in Industrial Engineering at the University of Toronto specialising in Human Factors.

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Carleene Bañez BEng

Human Factors Specialist

Since joining Healthcare Human Factors Group in 2007, Carleene has been conducting human factors evaluations of various medical devices and software applications for healthcare use. Her work is highly informed by her previous role as a Medical Engineering Technologist at Toronto Western Hospital. Her knowledge and expertise stems from working with a variety of medical equipment and enables her to readily identify problems and provide recommendations with respect to the design, usability and safety implications of new and existing products used in healthcare.

Carleene holds a degree in Electrical Engineering from Ryerson University and has been working for the University Health Network since 2003.

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Deborah Chan BASc PEng

Human Factors Engineer

Deborah Chan specializes in designing and evaluating software applications for ease of use and excels at analyzing complex workflows and interactions involving multiple stakeholders. Deborah has been involved in national initiatives sponsored by Canada Health Infoway to accelerate the adoption of electronic health technologies, and has led the design and evaluation of healthcare devices and systems for organizations across the province. She is passionate about the use of user-centered design methods in the healthcare industry and advocates for this cause by participating in a wide range of educational initiatives.

Deborah holds a degree in Systems Design Engineering from the University of Waterloo and is a registered professional engineer with Professional Engineers Ontario (PEO).

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Tabitha Chiu MHSc

Human Factors Specialist

Tabitha completed her Master of Clinical Engineering degree at University of Toronto, where she discovered a passion for the use of human factors methods in the design of technologies in healthcare. As part of her Masters thesis, she developed an anxiety meter for children with Autism Spectrum Disorder, which included ECG signal processing and user interface testing of the intervention. She also holds a B.Eng in Biological Engineering from University of Guelph.

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Diane De Sousa MHI

Human Factors Specialist

Diane has a strong interest in human-computer interaction and cognition and is ardent about improving system design in healthcare. Her recent projects have involved developing and evaluating prototypes for health information systems and conducting usability evaluations on medical devices including smart pumps.

Diane completed her Master of Health Informatics (MHI) from the University of Toronto and also holds a BSc with First Class Honours in Neuroscience and Computer Science from Dalhousie University. Her previous background includes working in the pharmaceutical industry, coordinating investigations into incidents affecting medication quality, safety, or regulatory standards and reviewing product quality trends to proactively monitor for potential areas of concern.

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Chris F

Chris Flewwelling MHSc

Human Factors Specialist

Chris first joined Healthcare Human Factors in 2011 as a Master’s student under the supervision of Dr. Joseph Cafazzo. His Master’s thesis focused on identifying latent usability-related design flaws in medical devices through analysis of medical equipment maintenance data. His research demonstrated that usability-related design flaws manifest themselves as an increase in “No Fault Found” reporting. As a result, Chris’ research has provided a methodology that can be applied by healthcare institutions to reduce occurrences of medical device use error.

Chris is passionate about the expanding responsibility of the Clinical Engineer in ensuring the safe and efficient delivery of healthcare. In particular, he is interested in improving patient safety through promoting and participating in the user-centered design of medical devices and technologies. Chris has contributed to projects such as the design of a mobile clinical collaboration system, and the evaluation of smart infusion pumps and mobile anesthesia delivery units.

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Stefano Gelmi BASc

Human Factors Specialist

Stefano Gelmi is passionate about using human factors methods to find efficient solutions to complex problems and excels at effectively using technology to improve processes. His recent projects include the evaluation of different medical devices, including a mobile anesthesia delivery unit and smart infusion pumps.

Stefano provides the technical expertise behind the simulation labs at the Centre for Global eHealth Innovation. Using his experience in theatre production, he coordinates the set up of complex simulation environments and uses his background in staging to create realistic scenarios for usability testing.

Stefano studied at the University of Toronto and holds a BASc in Industrial Engineering specializing in Human Factors.

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Tracey Herlihey PhD

Human Factors Specialist

Dr. Tracey Herlihey joined Healthcare Human Factors after completing a Mitacs Enterprise Internship at a boutique user research company in Toronto. Tracey has a Ph.D. in Psychology specializing in Human Perception and Performance and a BSc. in Applied Psychology from Cardiff University in the UK.

Tracey’s broad research interests have lead her to investigate topics ranging from night vision goggle artifacts to cognitive stroke recovery and more recently human-computer interaction. Tracey has worked at some of the world’s top research institutes including the University of Toronto, York University’s Centre for Vision Research, the Challenging Environment and Assessment Laboratory at Toronto Rehabilitation Institute and the Centre for Stroke recovery at Sunnybrook Health Sciences Centre.

Along with her research experience Tracey also brings with her many years of teaching experience having taught Vision Science at the University of Toronto, as well as Psychology and Design at Ryerson University.

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Mario Iannuzzi MASc

Human Factors Specialist

Mario has a passionate interest in human factors and its applications in healthcare. Though he started his education in mechanical engineering, Mario quickly switched his area of study to specialize in Human Factors once he learned of the absolute necessity of the field from the book “The Human Factor”. He felt that understanding how people think, including their capabilities and limitations, and applying this knowledge to design (using engineering and problem solving skills) would be the best way to achieve one clear goal: optimize the well-being of people through the design of systems and technology.

His expertise and knowledge in the field stems from his experience working in human factors across a variety of other domains, including military aviation, transportation, and process industries. This versatility allows Mario to quickly adapt to any challenge with his experience in user-centered design, ecological interface design, and cognitive work analysis. He knows that everyone won’t fly a military helicopter, or work in a petrochemical plant – but almost everyone will interact with a healthcare system at some point in their lives. With this in mind, Mario is excited to apply his skills in an attempt to improve healthcare for people around the world.

Mario holds a BASc in Industrial Engineering at the University of Toronto with a minor in bioengineering, and an MASc in Industrial Engineering at the University of Toronto specialising in Human Factors.

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Justin Kirkey BASc PEng

Human Factors Engineer

Justin has a passionate interest in the critical intersection between humans and the technology we create. Studying in university, he serendipitously discovered the “common sense” field of human factors and user experience design by reading a book called “The Human Factor,” and he hasn’t looked back since.

Justin’s work experience has spanned various industries, giving him the opportunity to apply human-centred design ideals in myriad contexts, both digital and physical. From having worked in safety-critical fields including aerospace and healthcare, as well as the fast-evolving consumer-facing marketing technology and web industries, Justin has a solid understanding of how users perceive and interact with the many different technologies around them, and how to make those experiences as safe, efficient, and as enjoyable as possible.

Whether it be for mobile, tablet, desktop, specialty devices, or a medium that has yet to be invented, Justin is strongly interested in ensuring that human-centred design techniques are used in conjunction with creative wizardry to surprise and delight a happy user.

At Healthcare Human Factors, he is excited to be working to make a difference in the healthcare industry, looking to boost innovation in the field and move towards the dream of a truly patient-centred healthcare system, one interface at a time.

Justin holds a BASc in Industrial (Systems) Engineering from the University of Toronto, with a specialty in Human Factors Engineering.

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Mike Lovas MASc BEng BDes

Human Factors Specialist & Design Lead

Mike completed an undergraduate degree in Mechanical Engineering followed by a master’s degree in Biomedical Engineering at Dalhousie University. Following graduation, Mike has worked in a variety of healthcare disciplines, from orthopaedic surgery to psychiatric research. Mike has also fostered a creative approach to problem solving and completed a degree in Industrial Design at OCAD University. Throughout his career, Mike has worked on numerous health-related products ranging from concussion diagnostic EEG, to orthopaedic surgical tools, to wearable fitness technology. At Healthcare Human Factors, Mike is helping drive more patient-centered design approach to problem-solving in healthcare.

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Jason Luk BASc BDes

Human Factors Designer

As a designer, Jason has worked in many fields including healthcare, consumer electronics, service design, and sports equipment. Having worked for clients such as HTC, Samsung, LG, FedEx, Pepsi, Abbvie, and UCB, Jason is capable of applying design principles as a strategic designer who can think critically. It is this aspect that allows Jason to understand user affordances and visual hierarchy in creating accessible experiences through technology that positively impact people’s lives through powerful user experience.

Having worked with business strategists, anthropologists, designers, engineers, and developers, Jason believes that to achieve this, a truly dynamic and agile approach is required in creating experiences that’s not only compelling, but that promotes discovery and engagement. Having participated in design research, facilitating ideations, conceptualizing, and rapid prototyping, Jason has been an avid student of design thinking and how it aligns with business strategy. Jason holds a BASc. in Food & Nutrition and a BDes in Industrial Design.

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Aarti Mathur

Human Factors Operations Coordinator

Aarti’s responsibilities include providing research, communications, administrative support, and organizing and managing the programs and activities of Healthcare Human Factors. Aarti organizes research and community events and supports a variety of projects. She is an active part of the Business Development Committee which aims to develop and maintain client relations and to coordinate details of international client visits. On the research side, Aarti assists the group with their research, finances, usability studies and in the writing and submission of research grants.

Aarti holds a Bachelor of Commerce Honours Degree in Tourism Management from the University of Guelph and a post-grad certificates in Marketing and Professional Writing from the School of Continuing Education at University of Toronto.

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Nathan Mills

Human Factors Designer

Nathan holds a Bachelor of Industrial Design from the University of Newcastle, Australia, where he worked on the redesign of the electrosurgical unit at Newcastle General Hospital as his thesis.
In addition to industrial design he is also skilled in graphic design and UX/UI. His past collaborations include projects within transportation, healthcare, extreme sports, electronics, furniture, point-of-purchase and toys design. Nathan’s work has taken him to parts of Australia, Asia, Europe and now North America, back to healthcare.

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Aastha Patel MEng

Human Factors Specialist

Aastha Patel is a Human Factors Specialist at Healthcare Human Factors. She holds a MEng in Mechanical and Industrial Engineering from University of Toronto with a specialization in Human Factors and Biomedical Engineering.

Aastha joined Healthcare Human Factors upon completing her undergraduate studies in 2014. She plans, conducts and reports on usability testing on medical devices and software applications for submission to the FDA. She also performs systematic inspections of user interfaces based on recognized usability principles, and contributes towards patient safety initiatives by shadowing and conducting interviews.

Aastha is excited to be working with Healthcare Human Factors where her work aligns with her passion of improving healthcare.

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Laura Parente

Human Factors Designer

Laura graduated from the Graphic Design program at Montreal’s Dawson College and is currently working towards her Bachelor of Design at OCAD University. Her past work experience and collaborations include design projects ranging from brand, identity and logo design, to product packaging, print, and web design.

From seeing her work on retail shelves to seeing it in the hands of healthcare providers, Laura has become very involved with integrating good design into healthcare. Laura’s goal as a part of the Human Factors team is to improve methods for healthcare delivery by applying her skillsets in communication and design to the variety of projects she’s involved with.

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Plinio Morita PhD MSc Eng

Research Lead

Dr. Plinio Morita has conducted research programs in Canada, Japan, Spain and Brazil focusing on human factors engineering, trust, interface design, teamwork, human performance, risk management, patient safety, technology assessment, and clinical engineering. Plinio was a recipient of the prestigious NSERC Vanier Canada Graduate Scholarship and the JSPS Post-Doctoral Fellowship.

Plinio obtained his undergraduate and Masters in Biomedical Engineering from the University of Campinas in Brazil. In 2007, he spent a year in Spain working for the Spanish Ministry of Health evaluating health technologies. In 2013, Plinio spent three months in Japan at Kyoto University conducting cross-cultural research in perception mechanisms of interpersonal trust. In 2014, he obtained his PhD degree in Human Factors Engineering from the University of Waterloo.

Plinio’s major research contributions focus on the improvement of social interactions of humans in team environments and human-system interactions. In his PhD research, he developed tools to model, measure, and foster trust in face-to-face and virtual teams.

While at the University of Waterloo, Plinio worked on several projects in collaboration with military and industry partners.

Over the years, Plinio has been actively and passionately involved in teaching Systems Design Engineering as a Sessional Lecturer. He is currently an Adjunct Lecturer at the Institute of Health Policy, Management and Evaluation at the University of Toronto.

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Ashleigh Shier MHSc

Human Factors Specialist

Ashleigh first joined Healthcare Human Factors in 2010 as an Industrial Engineering PEY student, and returned in 2012 as a Master’s student under the supervision of Dr. Joseph Cafazzo. Her Master’s thesis project focused on designing a novel radiotherapy monitoring and delivery interface using the ecological interface design method. The interface design aimed to better support user situation awareness, and to thus prevent patient safety errors. In a comparative study with a currently used system, radiotherapists were able to detect more critical patient safety errors with the redesigned system.

Ashleigh is passionate about clinical engineering and its role in enhancing patient safety. She is particularly interested in good design and advocating for user-centered design practices in medical device and health IT creation. Ashleigh has been involved in projects including the design and development of patient support apps, the design of a mobile clinical collaboration system, and the evaluation of smart infusion pumps and health IT systems.


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Anthony Soung Yee PhD

Human Factors Specialist

Anthony brings a wealth of experience as a researcher, consultant and instructor. In 2013, he received his PhD in Industrial Engineering (Human Factors) from the University of Toronto, investigating human operator performance using a software-enhanced display in simulated aerial search tasks. Anthony has also consulted in the Aerospace industry from 2008-2010, working in a team of Human Factors engineers to design a lunar rover cockpit for driving in all lighting conditions. He is excited to be back working in the Healthcare industry after his first exposure in the University of Toronto Masters program (graduated 2008), designing and evaluating display enhancements to improve operator performance in laparoscopic surgery.

Anthony has a passion for both learning and teaching, having had the opportunity to teach a fourth year and graduate Human Factors course at University of Toronto entitled Engineering Psychology and Human Performance. His consulting experience in Aerospace has also included corporate training in Human Factors design principles.

Anthony strongly believes that the insights and techniques gained from all industries can be applied to improve healthcare in Canada and abroad.

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Svetlena Taneva PhD

Human Factors Specialist

Dr. Svetlena Taneva specializes in the development and evaluation of human-centered technology and organizational processes in clinical environments. By incorporating knowledge of the social and cultural aspects of healthcare, she has leveraged workflows in the operating room setting that enhance safety and efficiency. Dr. Taneva has also been involved in the design of healthcare technologies at Siemens Medical, and brings international experience, having worked in Canada, the U.S., France, Germany, and Switzerland.

Dr. Taneva has published extensively in a number of scientific journals and conferences relating to healthcare human factors and patient safety. In addition, she is the author of a book on the management of surgical coordination processes, and a co-author of a book chapter on technology-based approaches to mental health care. Dr. Taneva is a frequent public speaker to professional and scientific audiences.

Dr. Taneva holds a PhD in Engineering, specializing in Healthcare Human Factors, a Master of Computer Science specializing in Cognitive Engineering and Human-Computer Interaction, and a Bachelor of Science in Psychology.

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Peter Weinstein MHSc

Human Factors Specialist

Peter is leading Healthcare Human Factors efforts in the USA. He has a BEng in Aerospace Engineering specializing in space systems design and operated an IT consultancy before earning an MHSc in Clinical Biomedical Engineering from the University of Toronto. He is keenly interested in user experience, patient safety and resilient systems in healthcare.

His recent work includes: Fabrica Health, a multi-million dollar start-up effort created to harness the incredible amount of data being in cancer by gluing existing and future systems and by providing compelling tools to enable the capture of outcomes by clinicians, researchers, and patients; the design of ‘Loop’ a mobile clinical collaboration system that allows patients, caregivers, and health care providers to communicate and build a shared team awareness across disciplinary and institutional boundaries; as well as the design and evaluation of medical devices that not only satisfy regulatory requirements (e.g. FDA 510(k)), but that bring together healthcare, technology, and people together in ways that are safe, effective, and even fun!

He is extremely passionate about design and engineering and the potential it has to build great products and bring important change to healthcare around the world.

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Shivani Goyal MASc

PhD Research Fellow

Shivani Goyal is a Clinical Engineering PhD candidate from the Institute of Biomaterials and Biomedical Engineering at the University of Toronto, conducting her research at the Centre for Global eHealth Innovation. Shivani’s research interests are in the realm of behavior change and chronic disease management. She is driven by the overwhelming prevalence of chronic disease and the need to improve the quality of health care delivery by maximizing the effectiveness of health interventions.

Shivani completed her Master’s thesis at the Montreal Heart Institute, where she evaluated innovative cardiovascular medical devices. She presented the safety, effectiveness and overall feasibility of the biomedical devices to the key decision makers of the hospital. Shivani also completed an internship with the Jewish General Hospital in Montreal, where she efficiently managed multiple medical technology replacement projects while simultaneously participating in research and development initiatives. Prior to her contributions to the healthcare industry, Shivani interned as an Aerospace Engineer at top organizations in both Canada and Europe.

Shivani received her MASc in Clinical Engineering from the Faculty of Medicine at the Université de Montréal and her Bachelor of Mechanical Engineering with a specialization in Thermo-fluids and Propulsion from Concordia University.

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Areeba Zakir BASc Candidate

Professional Experience Year (PEY) Student

Areeba Zakir is a Professional Experience Year (PEY) student at Healthcare Human Factors. She has completed her third year in Industrial Engineering at the University of Toronto.

Areeba has worked as a Research Assistant at the Human Factors and Applied Statistics Lab in 2014, where she worked on projects about nested interruptions in a CVICU environment and decision making techniques of flight planners at Ornge. Her research was funded by the Undergraduate Summer Research Award.

Areeba is passionate about community involvement for which she was awarded the Engineering Society Award in 2014. She is currently the Co-Chair for Galbraith Society and Sponsorship Director of the Human Factors Interest Group UofT Chapter.

As a PEY student at Healthcare Human Factors, Areeba hopes to expand her knowledge on human factors in the healthcare industry. Her goal is to help improve devices used in the healthcare system and to provide a safe environment to patients and care givers by integrating human factors principles to the current practices used.

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