Where do I call to find out if I have an order on file? Please call Cayuga Medical Center Laboratory at 607-274-4474, Monday through Friday, 7:30 a.m. to 5:30 p.m. and on Saturdays from 7:00 a.m. to 2:00 p.m. I have a billing question; who do I call? Please call the Billing Office at 607-274-4400..