sleep disorder research trials

Research Trials

Do you have problems sleeping? See if you qualify for one of our clinical trials.

Investigational Sleep Device for Obstructive Sleep Apnea    

Locations in Canada

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We're opening new MedSleep clinic locations across the country.

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Sleep Apnea Clinical Trials in Canada

About Us

Our physicians are highly skilled and widely experienced in the field of sleep disorders medicine. Our entire team of professional staff is committed to providing excellent patient care. Your health comes first.

Management Team

Kostas Tsambourlianos MBA, PMP


Kostas TsambourlianosKostas 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. Kostas is responsible for Business Development, Operations, Marketing, Human Resources and Finance.

James MacFarlane Ph.D, D.ABSM
Director of Education, MedSleep

James MacfarlaneJamie MacFarlane is an Assistant Professor of Pediatrics and Psychiatry, University of Toronto. He was granted his doctorate from McMaster University Medical Centre for his work in neuropharmacology and began his sleep career at the Toronto Western Hospital in 1989. He also is a Research Associate at the Hospital for Sick Children in Toronto and is a consultant at the Niagara Sleep and Snoring Centre. He currently serves on the Board of the Canadian Sleep Society. Dr. MacFarlane is actively involved in developing innovative sleep educational programs for sleep technologists, medical students and physicians. He also provides public lectures to enhance awareness of issues related to sleep and sleep disorders.

Karen Vegnaduzzo Honours BA, CCRP.

Senior Director

Karen VegnaduzzoA member of the MedSleep family since its founding, she brings over 12 years of operational and clinical research experience in healthcare. 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.

Adam Blackman MD, FRCPC, D.ABSM, D.ABPN


Adam BlackmanDr. 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.


Actual Comments From Our Patients

Moncton - Jan 2016:

  • I would like to thank you and the team at Moncton Sleep Institute for the superb care and service that you provide.
  • I just wanted to express my appreciation for the fine professional service that I have been granted by your company over the last few years. I started dealing with Laura, then Angela Hoffman, and now yourself.  Each time,  with each individual, and even dealing with your receptionist,  I have been treated with excellent, professional service, and I  don't take these things for granted.  I have, in the past, and will continue to refer people to your organization, in the future, when the opportunity arises.

Vancouver- Jan 2016:

  • Dr. Comey is very dedicated authentically interested and accommodating in difficult circumstance.
  • The woman at reception is outstanding.  She is so kind and understanding.  I wish I had the same experience everywhere I went.
  • The service has been fantastic in every aspect.
Nanaimo- Jan 2016:
  • Lab was very comfortable, and the lab tech was very pleasant and knowledgable.
Toronto - Eglinton- Jan 2016:
  • It ran like a well-oiled machine.
Toronto - Thornhill - Jan 2016:
  • Dr. Kohn saw me in a timely manner for both my consult and follow up appointments.  I was well informed about the process before sleep test and diagnosis in terms I could understand.
Toronto - Etobicoke- Jan 2016:
  • Hibo is absolutely lovely and a pleasure to deal with.
  • Having worked in health regulation with several health colleges, the CPSO being one, I am acutely aware of the fine balance of being professional  yet personable.  Dr. Rittaka is such a physician and he is an asset to your team.
Pembroke - Jan 2016:

  • Well organized, nice setting, comfortable bed.
  • The doctor was an excellent communicator and took time to make sure all my questions were answered.

Halifax - Jan 2016:

  • Dr Marval - Ospino‚Äč has consistently provided me with outstanding care - empathetic, timely, well-reasoned. I appreciate everything he has done for me.
  • Dr. Marval has been integral in my treatment, he is very supportive and understanding of my condition, and is always concerned about my health and well-being.

Our facilities

Medical Profile

Disorders We Manage

We manage the full spectrum of sleep disorders including:

  • Insomnia
  • Snoring
  • Obstructive Apnea
  • Periodic Limb Movement
  • Restless Legs Syndrome
  • Bruxism (Teeth Grinding)
  • Daytime Sleepiness, Fatigue
  • Sleep Walking
  • Night Terrors, Nightmares
  • Narcolepsy
  • Idiopathic Hypersomnia
  • Jet Lag
  • Shift Work Sleep Disorder
  • Circadian Rhythm Disorders

How we help

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