Integrating categorical funding to design "seamless systems of care" for individual patients is a challenge faced by many local community-based providers. Providers may choose to develop separate site-specific categorical programs for patients with human immunodeficiency virus (HIV) [e.g., specialized treatment site or a homeless clinic] or integrate these programs with their general primary care population. Regardless of program location, providers have developed patterns for finding the most appropriate medical home for a patient with multiple categorical risks. Medical records reviews and patient interviews indicate the importance of case managers in service coordination, although clinical issues appear more readily coordinated than situational ones. Provider dependence solely on case managers for service coordination, across sites and programs may become problematic in the era of managed care without a supportive information system that tracks client use and a records system that integrates clinical and social service notes. Local providers have encountered difficulties in exchanging essential medical information, even within a single agency, under state statutes regarding confidentiality of HIV test results.