Top doctors are an important customer segment as they influence a large portion of the market. They are rare, precious, and difficult to understand due to their egos, reserved personalities, and unwillingness to change. To build quality relationships with top doctors, companies must focus on quality of information, service, and the relationship through consistent care and profiling. Companies should utilize top doctors for activities like educational talks and market research to strengthen connections while also recognizing that customers are the purpose of the business.