I applied online, but then saw a local "career fair" and attended. After refilling out the paper application and following clear detailed instructions (obviously meant to see if you would follow them precisely) I was taken to a "prescreen interview" with three employees from different areas. First I was asked to self-rate my skill level in various computer areas. The very first question was regarding a common acronym for a medical condition (what does it stand for)? There were other questions clearly designed to simply see if people had adequate medical knowledge. {I.e, what type of doctor would you see if you have liver disease? What is another organ affected by diabetes?)
After "passing" that section of interview I was taken to a Medical QA supervisor who interviewed me with some more medical questions as well as more traditional interview questions (name three weaknesses, how do you work in a team if everyone is not pulling their weight). He wanted questions answered in the STAR format and I didn't know what that was! So review it.
There was no written assessment for this position that day.
Everyone was polite and friendly. There is no reason to be intimidated if you have the medical knowledge and are polite and articulate.