Public services are increasingly delivered through the web of collaborative networks, in which organizations compete and cooperate simultaneously. This Element explores how coopetition, namely the simultaneous presence of competition and collaboration, shapes innovation in the health care sector.

1. Introduction: Inter-Organizational Dynamics and Innovation; 2. The Theoretical Framework of Coopetition; 3. Coopetition and the Adoption of New Medical Technology; 4. Collaboration and Service Innovation in Competitive Markets; 5. Pioneers of Patient-Centered Care; 6. Concluding Discussions: Collaborative Innovation in Competitive Markets.