This is so impossible!
You have a great product for 1-10 general doctor practices. You should focus on that and just that. If you feel like you have a lot of free time on your hands try knocking on 1-5 pain management doctors clinic. See how you do there. If you manage to customize their workflows and menus for pain management, move to 1-5 MDs obesity clinics, and so on. I suspect that after single pain management clinic you get burned out.
Have you ever looked at UMLS http://www.nlm.nih.gov/research/umls/ ? It has 2,612,024 mln medical concepts and counting. Many diseases are still poorly covered. Any time you talk with a specialist in a hospital he/she will need those terms in their documentation. Every disease has different workflow and different vocabulary. If a hospital thinks about adopting a new EMR, they will send ~100 their own IT people to EPIC/GE HQ to have them trained how to configure their system. Then, those ~100 IT people will work with ~1000 MD to have progress notes, flowsheets, and what have you configured to everyones liking. This is SO MUCH work and huge investment that has to have 0.0001% risk for the hospital and for the patients. Keep in mind that if patient dies and there are lacks in documentations someone will have to pay ... a lot.
I'm sure that some day you will have ~1k engineers and ~2k support team, each encumbered with basic medical knowledge and patient workflows. But then you will notice that healthcare can be changed only top-down not ground-up.