Successful delivery of mental health services to Hispanic Americans depends on understanding the sociocultural variables that produce conflict for this group. For Puerto Ricans on the United States mainland, identity problems arising from Puerto Rico's historical and social circumstances are aggravated by the need to deal with cultural and language barriers in the United States. In adjusting to the dominant culture, mainland Puerto Ricans often experience identity crises, personality problems, and family conflicts. To deal with Puerto Rican mental health problems, professionals have adapted existing models of service provision for Hispanics in establishing community programs. The Professional Adaptation Model emphasizes training for mental health center staff in Hispanic cultures. The Family Adaptation Model stresses the family role in providing emotional support for members. The Barrio Service Center Model has been the basis for establishing neighborhood centers for economic, informational, and social support services. The Hanneman Community Mental Health Center (CMHC) in Philadelphia, Pennsylvania, has developed a service system model that integrates these approaches. CMHC both offers consultation on Puerto Rican culture and on services for Puerto Ricans to other agencies and community groups and provides a range of nontraditional mental health services to the Puerto Rican community. This center illustrates the flexibility required to meet the psychological service needs of Hispanic Americans. (Author/MJL)