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About Us


DELTA SLEEP is a sleep health service delivered by sleep professionals with experience in Sleep diagnostics and Behavioral Sleep Medicine. Our physiologists have experience in aiding the diagnosis of sleep disorders and has provided treatment to hundreds of patients using Behavioral Sleep Medicine strategies through Sleep Therapy Clinic. Behavioral sleep medicine focuses on providing non-pharmacological treatment for selected sleep disorders. We collaborate with Clinicians to provide a comprehensive sleep service for a referred individual.

We believe sleep is the cornerstone to optimum health, performance, productivity, and strives to provide education on the science of sleep and sleep optimization to employees from an array of industries.

Sleep Physiologist

Motty Varghese is a Sleep Physiologist licensed by the Board of Registered Polysomnography Technologists and a graduate Respiratory Therapist. Motty also completed training in Behavioural Sleep Medicine in Perelman School of Medicine (University of Pennsylvania). He also underwent training in Insomnia Therapy in the CIrcadian and Neuroscience Institute at the University of Oxford. Motty also completed Nationally Recognised Training (Australia) on ``Administer the implementation of fatigue management strategies``.He is also the founder of Sleep Therapy Clinic, a Behavioral Sleep Medicine Clinic based in St James's Private Clinic in Dublin. Mr. Varghese worked in St James's Hospital as a Senior Respiratory and Sleep Physiologist until 2018. During his tenure, he was involved in the diagnosis and management of individuals with Obstructive sleep apnea. His research interests were also focussed on Sleep diagnostics and have presented nationally at Irish Thoracic Society meetings and internationally at European Respiratory Society meetings. Mr. Varghese also worked for Al Hada Armed Forces Hospital under the Ministry of Defence in the Kingdom of Saudi Arabia and also in India. Mr. Varghese's current focus is on working with individuals who have insomnia and circadian rhythm disorders. He believes sleep is the cornerstone to optimal health and his efforts are focussed on improving awareness about sleep health. He has contributed to articles in Irish Independent, Irish Times and Irish Examiner and has been featured in visual media.

Scientific Advisor

Dr. Donn Posner is the Founder and President of Sleepwell Consultants and has been consulting to organizations and individuals on a wide variety of sleep health issues including insomnia, circadian dysrhythmia, CPAP adherence, and parasomnias. He is also currently an Adjunct Clinical Associate Professor in the Department of Psychiatry and Behavioral Sciences at the Stanford University School of Medicine and a consulting psychologist, for the Palo Alto VA. He is working on a number of grants exploring the effects of CBT-I in Gulf War Veterans and Veterans with insomnia and Mild Traumatic Brain Injury.
Prior to this, he spent 25 years serving as the Director of Behavioral Sleep Medicine for the Sleep Disorders Center of Lifespan Hospitals, and was a Clinical Associate Professor in the Department of Psychiatry and Human Behavior at the Warren Alpert School of Medicine at Brown University. For 20 of those years Dr. Posner had served as the primary supervisor for a rotation of the Behavioral Medicine track of the clinical psychology internship at Brown. The rotation focused on the assessment and treatment of Sleep and Anxiety Disorders, and was one of the few rotations of its kind in the US.
Dr. Posner is one of the authors of Cognitive Behavioral Treatment of Insomnia: A Session-by-Session Guide (New York: Springer/Verlag). The book is intended for clinical trainees, and non-insomnia sleep specialists, as well as more experienced clinicians from outside the sleep medicine field, who wish to learn how to provide empirically validated cognitive behavioral treatment for insomnia (CBT-I).
Dr. Posner is a member of the American Academy of Sleep Medicine and is one of the first Certified Behavioral Sleep Medicine specialists recognized by that group. He is also a founding member of the Society of Behavioral Sleep Medicine and he has also now achieved the status of Diplomate with the BBSM which is the highest level of qualification and competency they bestow.


Corporate Sleep Seminars

Sleep Optimization sessions

Sleep Diagnostics

E Learning courses

Fatigue Management solutions for safety sensitive industries

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