Dr. Paul McHugh, who runs the gender program at Johns Hopkins, is rather infamous for his homophobia and transphobia. Given his well-known views, whatever he may write on LGBT issues is likely to be nothing more than bigotry dressed up in pseudo-scientific language. He is also famous for advising the Catholic church on LGBT issues (and it shows.)
I understand that there was some sort of gender program at Johns Hopkins, at least recently, since I know someone who was sent there for some sort of evaluation a few years ago as a condition of being allowed to transition. Of course, the experience she described sounded more like conversion therapy than evaluation, but I believe it was billed as "gender" something.
I must say, though, I'm rather amazed to hear that Johns Hopkins has done any gender reassignment/confirmation surgeries, given McHugh's well-known attitudes.