I bring it into the office with me. There's a small storage room our department has here in the hospital and i just put my bike in there with the old microscopes, glass slides, and paperwork.

I don't come in through the front of the hospital though but rather a side door that requires a keycard and is on the 2nd floor so nobody has to see that i'm not using the bike racks out front.

I've seen afew other people wheeling around bikes.