@Roberta,
I was a little slow to think of this, but..
I've been to two clinics at the university of new mexico. Their med facilities are a tad spread out over x number of square blocks. When I went to the cancer clinic to be seen with hopes of later getting a low priced mammogram, I parked in the parking lot and there was a guy with a golf cart type thing that takes people from the parking lot to the building a couple of blocks away. Same thing with the eye clinic... which has a main clinic in the big hospital building and another about, uh, six or eight blocks away. There is a tram that takes people between these facilities, and other UNM med facilities.
Thinking, maybe Bellevue has something like that.... if you called and asked before arriving. Which... you might do anyway, to see where you are supposed to go first (UNM always calls the day before to make sure you know the date and the time and place.) If they tell you that you have to go to the old building first, that's a good time to scream and yell. They may have some remedy.....