What is an LICSW A Licensed Independent Clinical Social Worker (LICSW) is a mental health practitioner licensed in New Hampshire by the Board of Mental Health. LICSWs are approved providers for insurance companies and managed care plans, and in addition to working as independent psychotherapists, they also practice in a broad array of community institutions such as medical facilities, schools, nursing homes and mental health clinics. LICSWs must have a master’s degree in social work with an emphasis on clinical experience, undergo a formal postgraduate clinical training period of no less than 2 years of supervised clinical practice, and have passed the appropriate state licensing examinations.