Dr. Zhao's practice is a hidden gem! I have suffered from insomnia for 3-4 years, been prescribed all the habit-forming sleeping pills, gotten off of those sleeping pills, but couldn't sleep still. I then saw Dr. Zhao--he asked very informed questions on the first visit and then very patiently listened to me explain how frustrating it had been, etc.--was very sympathetic and encouraging, explained how sleep cycles worked, etc. His treatment for my condition was based in cognitive behavior therapy, it focused a lot on getting into a routine, relaxation/stress management strategies, etc. This helped me tremendously; I went from sleeping 3-4 hours/night to 6-8. The staff at comprehensive sleep care center were very warm, friendly, and professional. I can't say enough good things about this practice.