Practicing psychologists, by nature and by training, traditionally work independently to provide a wide variety of assessment, treatment, and consultative services. The opportunity to participate in integrated care delivery, and the evolution of health care delivery and reimbursement, are changing that tradition of independence. With systems theory, family psychology offers a way to conceptualize, operationalize, and evaluate this collaboration with patients, families, and the rest of the health care team. The literature in family health psychology to date focuses on the treatment of health problems such as lifestyle changes, chronic illness, terminal illness, somatization