Forgive me, but just claiming "we certainly would not expose your patient's data" is hollow at best - I take the responsibility for protecting my patient's health information very seriously, as do most physicians, and it is ultimately our responsibility to do no harm in that regard.
Not saying this is true of you guys, but there are a lot of incentives out there for "mining" and even selling health info. At the very least, storing health data on multiple, geographically disparate servers, logging access, retention policy, etc is a nightmare waiting to happen.
I already read your site's security pages, which in large measure do NOT address the questions I've asked here.
However, I believe you're right - neither I nor the software folks I consult with here in Bay Area will be interested in using your tool. Good luck to you.