ObjectiveThe role of family interests in medical decision making is controversial. Physicians who routinely treat incompetent patients may have preferred strategies for addressing family interests as they are encountered in surrogate medical decision making. We sought to determine how physicians view the role of family interests in surrogate medical decision making.DesignCross-sectional mail survey.SettingRemote study.PatientsSurveyed were neonatologists, pediatric intensivists, and medical intensivists affiliated with American medical schools.Measurements and Main ResultsA total of 327 (55%) of 596 surveys were returned; 35% of respondents were pediatric intensivists, 39% were neonatologists, and 26% were medical intensivists. The majority of respondents believed that family interests should be considered in decisions for incompetent patients, even if those interests are not necessarily important interests of the patient. Less than 10% preferred the traditional model in which the physician-patient relationship is exclusive and family interests are excluded. Medical intensivists, and those who described themselves as more religious, more opposed to healthcare rationing, and more protective of patients, tended to prefer patient-centered surrogate decision-making models. Physicians who treat children, especially neonatologists, were more accepting of family-centered surrogate decision-making models than were physicians who exclusively treat adults.ConclusionsA majority of the academic intensivists in our study believed that family interests should play an important role in medical decision making for incompetent patients. Our findings suggest that the traditional view of the physician-patient relationship may represent an overly simplistic model for medical decision making.