About LifeStance Health LifeStance is a national provider of mental healthcare services focused on evidenced-based, medically driven treatment services for children, adolescents and adults suffering from a variety of mental health issues in an outpatient care setting, both in-person at its clinics nationwide and through its digital health telemedicine offering. We have outpatient clinics in Manhattan, Brooklyn, Yonkers, Long Island City, New Hyde Park, Forest Hills, Garden City, Westchester County, West Nyack.