Diagnosis, evaluation and treatment of Sleep Disorders Obstructive Sleep Apnea, Narcolepsy, Restless Legs Syndrome, Insomnia, and REM Behavior Disorders. You do not need a referral from your primary care doctor or other specialist. Sleep disorders do more harm that just making you tired, problems include Attitude Changes, Memory Problems, Weight Gain, Daytime Sleepiness, Motor Vehicle Addidents, Increased risk for Heart Disease, Hypertension, and Stroke.