"Even if there's nothing useful... I want to see that for myself."

Just in case. He is, after all, the doctor here — he can't trust that anyone else would know what is or isn't useful for him.

And you know, if this difficulty with anything to do with doctors happened just once, he might have overlooked it... but this is the second time. So he raises his eyebrow, and asks,

"Got something against doctors?" Not really any of his business, but he's curious. He's not ever really run into people who have an issue with medical professionals.