Our mission is to help sufferers of sleep disorders get the restful, refreshing sleep they deserve. Through effective education, diagnoses, and treatment, we help thousands of patients overcome their sleep disorders to achieve better health. Helping You Sleep For Over 20 Years Founded in 1994 by sleep medicine pioneer S.K. Mostafavi, M.D., F.C.C.P., F.A.S.S.M., Advanced Sleep Medicine Services, Inc. (ASMS) began as a single-site diagnostic sleep testing laboratory. Over a short period of time, ASMS expanded operations across California, eventually opening more than 20 locations to service the sleeping needs of patients. Today, the sleep experts at ASMS diagnose and treat patients dealing with sleep disorders using state-of-the-art equipment and methods. We are a leading provider of: -In-center sleep studies -In-home (HST) sleep studies -PAP therapeutic devices -Replacement PAP supplies -And more! We are contracted with most PPO insurance providers, medical groups, and government health plans. Through our online store, our patients are able to quickly and easily order their treatment supplies and have them delivered directly to their homes.