If I looked up information on where an author works do I need to site the website?
The only time you need to cite a source is if you are using it in a paper, presentation or any other situation in which you are accountable for the correctness of what you say. It is good to know something about your author. Where they work can be important. You can probably identify the more prestigious locations--government agencies, such as the National Institutes of Health, the Centers for Disease Control and academic institutions, such as Harvard Medical, Mayo Clinic, Sloan-Kettering, etc. Of course, it doesn't mean they can't be wrong.
Bottom line--no, you don't need to cite it.
Coordinator of Electronic Resources