For over 20 years, Advanced Sleep Medicine Services, Inc. has helped patients and physicians across California diagnose and treat sleep disorders like sleep apnea. Now, with our virtual consultation services, patients from across the country are able to meet with our sleep experts for diagnoses and treatment from the comfort of their own home. All you need is an internet connection! Once diagnosed, our convenient online store makes it easier than ever to receive the services and support needed to get a great night’s sleep. 

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 over 300 insurance providers, medical groups, and commercial 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. 

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Meet Our Founder


Dr. Mostafavi is the founder and a board member of Advanced Sleep Medicine Services, Inc. Dr. Mostafavi is boarded in pulmonology and sleep medicine. He sees patients in his private practice in Century City.

Learn More About Dr. Mostafavi

We’re GROWING! Join our team.

At Advanced Sleep Medicine Services, Inc. we’re always on the lookout for dedicated professionals ready to join our team of sleep experts. 


Start Your Career With Us Today!

Your Privacy is Important To Us

Advanced Sleep Medicine Services, Inc. is HIPAA compliant. HIPAA (the Health Insurance Portability and Accountability Act) protects the confidentiality of your protected health information. HIPAA privacy regulations require the development of regimented procedures in order to ensure your health information remains private and protected when:

  • Transferred 
  • Received
  • Handled
  • Shared

These standards are applied to all forms of protected health information.