Is the dr/boss a rheumy? If so, yes, I'd get another opinion. If not, yes, I'd find a rheumy! Either way, I don't think a friend/boss makes the best dr, there is a conflict of interest, same as why dr's don't treat their own families.
One good way to make sure you find a dr who knows about
auto-immune diseases and doesn't have a personal agenda is to check out
www.lupus.org and find your local chapter. Then see which Drs volunteer their time to the chapter -- these are the fellows who know most about
Lupus and the like and are interested in learning more!
Best wishes,