Our Team

Management Team

Kosta Tsambourlianos, MBA, PMP


Kosta Tsambourlianos joined the MedSleep family in October 2010. Having completed his MBA from the Kellogg School of Management, he is also a registered Project Management Professional (PMP). His rich background in a wide variety of industries such as Shoppers Drug Mart, IBM and Lafarge brings a unique perspective to the business. In addition, he is a professor in the MBA program at the Schulich School of Business, specializing in Strategic Field Studies and International Business. Kosta is responsible for Business Development, Operations, Marketing, Human Resources and Finance.

James MacFarlane, Ph.D, FAASM

Director of Education and Quality

James MacFarlane is an Assistant Professor of Psychiatry, University of Toronto, and a Fellow of the American Academy of Sleep Medicine. He was granted his doctorate from McMaster University Medical Centre for his work in neuropharmacology and began his sleep medicine career at the Toronto Western Hospital in 1989. He was previously a Research Associate in the Department of Neurology at the Hospital for Sick Children in Toronto, and continues as a consultant at the MedSleep Niagara and Toronto area Sleep Clinics. He is currently serving on the Board of the Canadian Sleep Society. He has also been actively involved in establishing sleep medicine standards with both the Canadian Sleep Society and the College of Physicians and Surgeons of Ontario. Dr. MacFarlane has developed innovative sleep educational programs for sleep technologists, medical students and physicians. He also provides public lectures and media appearances to enhance awareness of issues related to sleep and sleep disorders.

Karen Vegnaduzzo, BA (Hons), CCRP

Senior Director, Operations

A member of the MedSleep family since its founding, she brings over 18 years of operational and clinical research experience in healthcare.  Karen has extensive experience in managing multi-facility operations and specializing in improving quality outcomes, strategic planning, clinical management, and regulatory & ethical compliance.   She is an established leader and strategic thinker who excels in partnering with physicians, senior leaders, and front-line staff to optimize care delivery and accelerate growth. Her focus on helping to build an efficient and effective organization has played a key role in MedSleep’s evolution from a single clinic to a national operation. Karen is responsible for providing overall operational management to MedSleep’s Ontario clinics. In her role, Karen leads, manages and executes all operational and clinical research initiatives in Ontario, in addition to managing various strategic projects. 

Olga Iakovenko, BSc (CMMB), PSGT

Senior Director, Western Canada

A member of MedSleep family since 2010, Olga brings nine years of experience in polysomnography, clinical research, clinical and operational experience in sleep medicine. Olga manages multiple facilities in Alberta and British Columbia. Her focus is on managing and improving quality outcomes, operational efficiencies and strategic planning for future growth.

Michele Morrison, BSc, RRT

Regional Manager, Eastern Canada

Michele joined MedSleep as the Moncton Manager in 2011, and was promoted to Regional Manager in 2013.  Her career has evolved from critical care in a hospital setting to home care and palliative planning. In addition to being a patient care focused Registered Respiratory Therapist who maintains an active group of patients, she has completed a Bachelors of Science degree. Michele has played a key role in establishing Medsleep as a quality provider of sleep care in the community and helped grow the company footprint in the Maritime provinces.  As an advocate of healthy living through better sleep, she promotes sleep by educating the public as well as various health professionals. She continues to dedicate herself to education and training and takes the energy to make sure that both her local team and RRT’s across the country continue to use the latest and most up to date technology and information in the treatment of sleep disorders, in accordance with AASM And CSS guidelines. 

Samantha Noble, BA

Director, Western Canada

Samantha joined the MedSleep family in February 2013 and since then has played an integral role in the growth of MedSleep in Western Canada. Her commitment to operational excellence has improved quality outcomes in the clinics she manages. She is an intuitive leader who believes in supporting and encouraging the members of her team to help them thrive and achieve the MedSleep mission. Samantha is responsible for the management of clinics in Edmonton, AB and Prince George, BC. She also provides support to the Director of Operations in the planning and execution of new projects. 

Wanda Howe

Manager Vancouver Island

Wanda joined the MedSleep family in 2018 as manager for Vancouver Island. After relocating from Ontario Wanda brought many years of experience working with Family Health Teams and day to day operations of family medicine. Supporting clinicians and staff while they provide care to the Island’s patients is what Wanda does best and she has been a great addition to our island team and the broader MedSleep family.

Kaitlin LeClair, BHSc, RPSGT


Kaitlin joined MedSleep as a Polysomnographic Technologist in early 2015, shortly after graduating with her Bachelor of Health Science, majoring in Biomedical Studies. She had always planned on building a career with the basis of helping people, and through employment with MedSleep, found an organization that she felt was making a real difference in her community. Kaitlin now deals with all aspects of the Prince George clinic, from community education to staff management to the overall patient experience. She has taken on special projects and been highly entrepreneurial to meet the high standards of patient care. She also oversees the Penticton and Edmonton sleep laboratories as the Technical Team Lead.

Hester Li, MAcc


Hester has been with the MedSleep family since 2011 and became the Accounting Manager in 2012. She is responsible for accounting principles, practices and procedures to ensure the efficient operation of the accounting department and all areas of financial reporting. Hester has made extensive efforts and contributions to the evolution and standardization of MedSleep’s accounting and financial systems since she joined. She and her team collaborate with the other departments across Canada to support company’s operational goals and objectives.

Jessica Christian, BSc(Nursing), PGDM-Healthcare Management

Operations Manager, GTA

Jessica began her career at MedSleep as an Operations Coordinator in September 2020. She has over 6+ years of experience in both Clinical and Healthcare Management. Jessica is highly proficient in strategic planning, electronic medical records, and managing health services at MedSleep.  Her focus has been on leading her team to achieve their best and finding creative ways to create operational efficiencies.  Jessica plays a key role in ensuring day-to-day operations, ensuring projects meet objectives on time, managing policies, creating reports, and framing Standard Operating Procedures.  Jessica’s focus on the changes in business processes, and systems & technology has been an asset to MedSleep.

Meghan Sherwin

Regional Manager
Meghan has worked in sleep medicine for 20 years. She joined the MedSleep family in 2012. With a background in Behavioural Science, she has moved through various positions within sleep medicine including research assistant, physician extender, and clinical support. Meghan now manages multiple clinics in Eastern Ontario. As the leader of a strong and dedicated team she hopes to continue to provide the community with the incredible service and patient care that MedSleep believes in and stands behind.

Adam Blackman MD, FRCPC, D.ABSM

Dr. Blackman graduated from the Faculty of Medicine at the University of Toronto and subsequently completed specialty training in psychiatry and a sleep medicine fellowship. Prior to founding MedSleep he was the medical director of the Toronto Western Hospital, Sleep and Alertness Clinic. He was the Vice-President of Medical Imaging and Business Development at Medisys Health Group from 2006-2008 where he was responsible for overseeing the Ontario Medical Imaging Division and developing innovative health care partnerships. Dr. Blackman is an assistant professor of the University of Toronto and teaches both residents and sleep medicine fellows. He has also been actively involved in establishing sleep medicine standards with both the Canadian Sleep Society and the College of Physicians and Surgeons of Ontario.