Hence, customer service manager, or marketing manager, or managing director, or managing partner, or owner of healthcare business must attempt to create service competitive advantage such as, service innovation, service excellence, and service value,to allows firms achieve service outcome such as, service satisfaction into service performance. Additionally, there are many factors that customer service flexibility strategy include goal achievement focus, modern service leadership, customer learning capability, marketing resourse readiness, employee knowledge richness, and market environment uncertainty. These factors can make customer service flexibility strategy occur. The research toward customer service flexibility strategy has been mainly regulated.