WebMD is a technology company that doesn't know anything about technology. They are so well positioned in the market that operations are as efficient as the DMV. The majority of the work done by any team is damage control. If they put more effort into a clear plan and simple processing steps then this would not happen. Instead, meeting a customers needs is a complicated, undocumented, 100 step process.
If you are going to work at WebMD make sure you get paid 10% more than your market value. You will need this extra income because you will not be learning any transferable skills while at WebMD or Medscape. Also, they have a reputation of treating their employees poorly. I was told this before I started. It's true and contractors are treated worse then employees.
The people you work with will likely be great. In order to do well, put your head down and learn the steps you need to perform. Don't bother trying to make improvements, your suggestions will land at the feet of an over worked middle manager who needs to spend 50 hours a week plugging holes in the ship with tape and bubble gum.