What We Do


Who We Are

The Sioux Falls Sleep Center is a local facility that provides patients with national level diagnostic sleep testing, clinical evaluation and individualized treatment plans.  The Sleep Center is managed by Hypnos Sleep Wellness, P.C. The South Dakota company was established in 2009 by Dr. Rizan Hajal.  Dr. Hajal has been actively involved in sleep medicine since 1999.  He has participated in more than 20,000 sleep studies and is double board certified; achieving one of the highest distinctions among sleep specialists nationally through his certification from the American Board of Sleep Medicine and the American Board of Internal Medicine Sub-specialty Board in Sleep Medicine. 

The Sioux Falls Sleep Center offers state of the art technology, innovative practices in sleep medicine, registered sleep technologists and a nationally boarded physician to deliver high quality local sleep studies and sleep health services.


American Academy of Sleep Medicine Accredited Center

The Sioux Falls Sleep Center is accredited by The American Academy of Sleep Medicine.  This accreditation testifies to outstanding care provided at the sleep center that is nationally recognized. You can rest assured that your care will be provided by a Diplomat of the American Board of Sleep Medicine, and staff specially trained and nationally registered. 

The American Academy of Sleep Medicine Accreditation also recognizes that the facility meets standards of Patient Acceptance, Facility and Equipment, Policies and Procedures, Data Acquisition, Patient Evaluation, Charting, Emergency Procedures, Education, and Quality Assurance.  The Sioux Falls Sleep Center strives to provide the highest quality of facilities and patient care available.