1 Medical Innovations and Interorganizational Diffusion -- Historical Background of Networks in the Health Sector -- Background of the Head and Neck Cancer Demonstration Networks -- Organizational Networks and the Diffusion of Innovation -- Focus of This Study -- 2 Data and Methods -- Introduction: Process Evaluation and Retrospective Case Studies -- Primary Sources -- Secondary Sources -- The Process of Synthesis -- Thumbnail Sketches -- 3 Network Environment and Response to Uncertainty: Performance Gaps and Definition of the Innovation -- Diffusion and Uncertainty -- Types and Characteristics of Innovations -- The Innovation in Head and Neck Cancer Treatment -- Performance Gaps, Agenda Setting, and the Network Programs -- 4 Considering the Environment: Environmental Context and Network Form -- Boundary Spanners and Interorganizational Linkage -- The Innovation Diffusion Model -- Considering the Environment -- Relating Environmental Characteristics to Diffusion Channel Form -- Summary -- 5 Network Form, Network Structure, and Boundary Management -- Network Form and Boundary Management -- Boundary Management and Network Structure -- General Purpose Linkages: Analysis of the Relationship between Context and Linkage Structure -- Summary -- 6 Variation across Hospitals in Network Program Participation -- Organizational Power -- Interest Structure -- Measuring Power, Interest Structure, and Participation -- Power and Participation -- Interest Structure and Participation -- Summary and Conclusions -- 7 Definition and Diffusion of the Innovation -- Definition of the Innovation -- Reinvention: Alternative Definitions of the Innovation -- Implementation Strategies -- Persuasion -- Summary -- 8 Network Outcomes: Transformation, Survival, and Institutionalization -- The Nature of the Organization and Organizational Effectiveness -- Measures of Effectiveness -- Network Constituencies -- Levels of Analysis -- Process Measures of Network Performance -- Structural Measures of Network Performance -- Outcome Measures: Ongoing Network Structures to Survive -- Early Network Failure: Lessons Learned from the Mississippi Network -- National Policy Changes and the Survival of the Networks -- Beyond Cancer Networks -- Appendixes -- A. Site Visit Outline -- B. Interview Protocol -- C. CEO Cover Letter and Questionnaire -- References.