Graymark Healthcare, Inc. is the provider of care management solutions to the sleep disorder market based on number of independent sleep care centers and hospital sleep diagnostic programs operated in the United States. The Company provides diagnosis and care management solution for patients suffering from sleep disorders. It provides diagnostic sleep testing services and care management solutions, or Sleep Management Solutions (SMS), for people with chronic sleep disorders. In addition, it provides therapy services, delivery and set up of continuous positive airway pressure (CPAP) equipment together with training related to the operation and maintenance of CPAP equipment, and the sale of related disposable supplies and components used to maintain the CPAP equipment. In May 2011, it sold Nocturna East Sleep Centers unit. In April 2012, it opened four new facilities for its comprehensive sleep medicine services.