How have any of you set up Quest or other lab facilities as outside vendors?

We are trying to order some tests through Quest, and do the billing. We have to reference the outside lab as the supplier. You know, referring physician is the inside doc, and facility where work is done.

I tried to set Quest as a facility, but the program wants to know if it's a hospital, nursing home, or home health. Of course it's none of the above. It's a lab or diagnostic facility.