Objectives-This study explored how mental health clinicians assess and respond to physical illness among patients presenting for mental health intake evaluations.Methods-A total of 129 adults were seen for a mental health intake visit. The intake visits were videotaped and involved 47 mental health clinicians from eight clinics who provided outpatient mental health and substance abuse treatment. A total of 120 videos of patient-provider interactions were coded using an information checklist containing 21 physical illness items. Twenty-eight intake visits exemplifying in-depth physical illness assessments were selected and transcribed for qualitative analysis.Results-Physical health was discussed in most intake visits (87%). Clinicians elicited information on physical health in 79 visits (66%), while patients volunteered such information in 80 visits (67%). Frequency of assessment differed by clinician discipline (p<.05) and by patient ethnicity (p=.06). Qualitative analysis revealed characteristics of appropriate assessments, such as formulating whether physical conditions were responsible for psychiatric symptoms in the differential diagnosis, noting physical side effects of medications, adjusting treatment plans, encouraging patient contact with primary care providers, and promoting physical health care.Conclusions-Assessment of physical illness is relatively common for mental health clinicians but was lacking in one-third of the cases in this study, until raised by patients. Because frequency of assessment differed by clinician discipline and patient ethnicity, innovations in patient assessment and clinician education are needed to address disparities in management of physical illness among individuals with mental illness.There are important reasons for mental health clinicians to be interested in the physical health of their patients. Physical illness occurs among more than 45% of psychiatric outpatients and often goes undiscovered (1-6), leading to lower quality of life, decreased functioning, and increased risk of early death (7,8). Individuals with severe mental illness die earlier than the general population because of poor health behaviors, medication side effects, inadequate preventive care, and insufficient medical care (9-12).Primary care interventions that address the physical health of persons with mental illness include care coordinators, specialized primary care clinics, and medical teams within psychiatric settings (11). An expanded medical role for mental health clinicians has been suggested but is less studied (13).The authors report no competing interests. Persons from ethnic minority groups with comorbid physical and mental illness face even greater disparities in medical care, including low rates of treatment for chronic pain, asthma, hepatitis, and diabetes (14,15). However, most health disparities research examines physician behavior in nonpsychiatric settings. In mental health settings that serve as safety-net treatment facilities, social workers, psychologists, and nurses provid...