well, I've never seen a doc in niquab either, and frankly, while I wouldn't care at all if they were wearing hijab, I'd be a bit concerned if my doc was wearing niquab. mainly as I'd have a hard time understanding what they were trying to explain to me should they ahve an accent or their voice be muffled, which is really important in a hospital! also, as someone who generally does not like going to the doctor and who is oftne nervous and maybe even scared when I'm not well, not being able to see my doctors reassuring face? That wouldn't help.