Director of the Sleep Medicine Center at Beijing Chaoyang Hospital, Capital Medical University, with over thirty years of experience in clinical and research work focusing on respiratory and sleep-related disorders. He possesses extensive clinical expertise and exceptional diagnostic and treatment skills, having been awarded the Third Prize for Scientific and Technological Achievements by the Ministry of Health and the Second Prize from the National Education Commission.

Social employment: Dr. Guo is a member of the Chinese Sleep Research Society, Chairman of the Sleep-Disordered Breathing Professional Committee, Chief Expert in National Sleep-Disordered Breathing Disease Scientific Communication, Standing Committee Member of the Chinese Medical Doctor Association Sleep Expert Committee, Member of the Chinese Medical Association Respiratory Branch Sleep Group, Member of the American Academy of Sleep Medicine, and serves on the Editorial Board and as a Reviewer for multiple professional journals both domestically and internationally.

Excellent:He specializes in challenging cases of snoring and sleep apnea, persistent insomnia and excessive daytime sleepiness, continuous coughing and chest tightness, and suspicious pulmonary nodules.