If you have the need to track yours or a family member's medical information, take a look at myHealth for Windows Phone 8. It is a simple, nicely laid out Windows Phone 8 app that will help you manage everything from medical contacts to medications to doctor's appointments.
The app can be password protected and individual accounts can be set up for yourself and other family members or even friends.
myHealth is cleanly laid out, easy to navigate around and is fairly comprehensive on the information it manages. It is an option worth considering if you need to keep medical information on you, friends or family handy.