Day-to-day job responsibilities will include: performing testing intakes, planning assessment batteries, administering psychological and/or neuropsychological measures, interpreting data, writing reports, providing feedback sessions, clarifying diagnoses, completing documentation, collaborating with team members, and developing treatment plans. 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.