Denison has an on-campus infirmary open 24/7, with beds for students who need to be watched/isolated. A staff physician is on campus Mon-Fri, regular working hours, plus nursing staff during those hours. After hours and weekends, there is always a nurse on duty. I don’t know about prescription writing after hours – it hasn’t come up for our family but I would think the nurse could communicate with doctor after hours and arrange for it to get called in. There is a CVS in town with a pharmacy. We found the presence of an actual infirmary where a student can go 24-7 for emergencies very reassuring.