Our Directory includes more than 315 CBT-I Providers Worldwide.

USA 10220 SW Greenburg RD, suite 150, tower 2, Tigard, OR 97223

Dr. Zelk is a Family Nurse Practitioner and Doctor of Nursing Practice who holds both a CBSM and DBSM certification. He has undergone Sleep Medicine training at the Atlanta School of Sleep Medicine and Polysomnography. He has completed a residency in Sleep Disorders Medicine at the VA Hospital/OHSU in Portland, Oregon. He has also completed a mini-fellowship in Dental Sleep Medicine and mandibular advancement device fabrication and case management. He has aspirations to improve access to myofunctional treatment for children to allow for improved airway development and prevention of sleep disordered breathing. He believes behavioral sleep medicine is the cornerstone to functional medicine and improved QOL. 

USA 450 Brookline Avenue, Boston, MA 02215

Dr. Eric Zhou is on faculty at Harvard Medical School and an Attending Psychologist at Boston Children's Hospital and the Dana-Farber Cancer Institute in Boston, MA. His research has focused on how we can better understand and treat sleep disorders in pediatric and adult populations. This research has been funded by the National Institutes of Health, Patient-Centered Outcomes Research Institute, and multiple foundations. He sees both pediatric and adult patients for sleep disorders at locations in Boston and Waltham, MA.