Know-How Exchange : Strategy

I am a sales rep. for a fairly new DME company. For three years we strictly did hospice, so pretty much, there was no marketing involved. We got our Medicare number in May and have since, slowly begun to market. I am having to teach myself, for the most part, how to market to physicians, hospitals, home health agencies...etc. What are some strategies to use, questions to ask, who are the best people to market to. I have a lot of questions. I know the equipment very well due to the three years of hospice work, because I was driving and setting up the equipment and explaining to the patients and families how to properly use it. I know some people are natural salesmen, some are not. It doesn't come naturally to me. Has anyone else on here worked with DME? If so, what are some of the experiences you guy's have had, and how did ya'll like it? Thanks for any replies.