Primary care clinicians occupy a strategic position in relation to the emotional problems of their patients. Integrating mental health and primary medical services promotes available, coordinated, accessible, and less stigmatizing treatment by recognizing an indivisibility of the total person in illness and in health. Federal efforts to encourage Health Maintenance Organization (HMO) development as part of a national health program prompts serious attention to organizational arrangements for developing such an integrated program for medical-mental health care. We have found a team collaborative model in which mental health providers are members of a primary care team to be useful and promising. Supportive services are provided on a continuing basis through patterned relationships. Shared responsibility for patient care between physicians, nurse practitioners, physician assistants, and mental health workers provides built-in peer review and encourages intrateam consultation.