Having trouble sleeping? The experts at the SSM Health Sleep Center on the St. Mary’s Hospital campus in Richmond Heights, conduct sleep studies to diagnose and treat a variety of sleep disorders in adult patients, ages 18 and older. If your doctor has scheduled a sleep study, patients are encouraged to park in the west parking garage off Bellevue Avenue on the St. Mary's Hospital campus and navigate to Suite 101 in the 1027 building. Sleep studies are offered seven days a week, in the evening hours. Patients are asked to arrive promptly at 8:15 pm and will remain in the sleep lab until 5:30 am the following morning. We also offer daytime testing for shift workers.