Hospital management is different challenge, since that's all about helping organize hospitals - figuring out how many doctors and nurses you need, how much medicine and supplies to buy, how much to pay your employees, etc. It's less about helping people directly and more about building the facilities to help people. Both roles are critical!
You will need skills in math, language arts, science...all the tough classes you might have. Challenge yourself, and go talk to the people at your local hospitals! Good luck!