The sleep lab, which treats more than 200 patients a month for a variety of sleep disorders, is under the direction of Natalya Thorevska, MD. The center is open seven nights a week, including Saturday. The state-of-the-art sleep lab in Hartford accommodates up to six patients at a time in comfortable surroundings with such amenities as flat-screen TVs. The Bloomfield location can handle up to four patients a night.