Ha ha. Seriously, clinical data entry is not quick or easy (outside a few limited special cases) regardless of how well you design that mythical app. Even perfect speech recognition would only get you part of the way there, and we aren't likely to get that any time soon.
I know, we use your service. :-) It works well for increasing the productivity of our human transcriptionists but it doesn't really solve the automated diagnosis data entry problem that others were asking about.
I really don't think perfect speech recognition is that far away. 10 years and we're gonna have something that can work. 10 years and we'll have an advanced Google Goggles that can help with diagnosis. Ask the question "What are the limits of human input?" Nothing besides touch, taste, hear, see and smell, and we're getting closer and closer to being able to input that data and process it as humans would.