Dr. Xavier is an interdisciplinary scholar, a board certified psychiatric mental-health nurse practitioner (PMHNP) and a nationally and internationally recognized leader in psychiatry and mental health nursing. She specializes in genetics and genomics, schizophrenia, psychotic disorders, and biobehavioral methodologies, combining clinical expertise with cutting-edge scientific research. With over two decades of clinical experience, Dr. Xavier has worked across diverse psychiatric care settings, including involuntary and voluntary treatment facilities, community hospitals, state mental health systems, and outpatient psychiatry clinics, supporting individuals with mental health disorders. Her program of research is centered on precision psychiatric care, with a focus on two key areas:(1) understanding neurobiological mechanisms that influence clinical and treatment outcomes in psychosis and schizophrenia, and (2) advancing psychiatric genomics to enhance clinical applications. Dr. Xavier's research spans mechanistic studies to clinical translation, while also focusing on empowering clinicians to integrate biological insights into existing psychiatric care models.