23andme is a great medical startup, but it is a capital-intensive business that has to spend time and money on Washington.
We (Epocrates) are working on an Electronic Health Record system as an additional product. Our core team is small, but we have the resources and brand of a midsize company. We have 40% of US physicians using our existing reference software and we are going to leverage our brand to provide a usable and moden system that increases the level of patient care and effectiveness of Doctors. We're a mixed RoR/Java/Mobile shop. We're currently hiring RoR developers, so please feel free to contact me if you are interested in this space and want to make a real impact on US healthcare.
The medical device/software field is certainly interesting, exciting even at times, but it progresses at an absolutely glacial pace for the most part. You're dealing with slow, conservative institutions (hospitals, etc) and government agencies. Unless you hire people specifically to deal with those soul-crushing interactions, you'll probably want to shoot yourself.
Part of it may be that you need medical connections to do the much of the work. We work directly with a ton of different doctors/hospitals (for a team of only ~15 devs), and still have issues with building the right things, 510k submissions, etc...
But yeah, medical applications are getting neglected by the startup community at the moment.
Many developing countries have had none or next to nothing health insurance till recently. But the market penetration of the healthy insurance is increasing (but still very low now). Because of that more people who could not afford advanced diagnosis or treatments earlier are able to afford them now.
Imagine the potential size of the industry when 1 billion people in India and 1.4 people in China (not to mention a billion or more in other developing countries) can afford as good health care as the 300 million in US, the 450 million in Europe, etc
I am curious as to what you have in mind. (I tried to find an email address for you and couldn't. Sorry to junk up this thread. You can email me -- from one of the websites in my profile -- if you don't want to post it here.)