This document summarizes Katherine Patterson's presentation to marketers about GE Healthcare's experience consolidating their agency roster. Some key points: - GE Healthcare originally had 341 agencies but consolidated to one agency per business to reduce costs and improve consistency. - Their audit of agencies found a trend toward shorter client-agency relationships, specialty agencies over full-service, and preference for small boutique firms. - Common client frustrations included bad billing, reusing old work, and agencies acting as order-takers rather than strategic thinkers. - Patterson emphasized the importance of clear communication from clients, limiting approval layers, understanding the drivers behind change requests, and challenging personal review styles not aimed at improving understanding.