1 Front Matter; 2 Introduction to the Case Studies; 3 Study Methods; 4 The Checkerboard Area Health System; 5 Crow Hill Family Medicine Center; 6 East Boston Neighborhood health Center; 7 Kaiser-Permanente Medical Care Program of Oregon; 8 Montefiore Family Health Center; 9 Sells Service Unit of the Indian Health Service; 10 Tarboro-Edgecombe Health Services System