Haha yes that makes sense! If it's more frequent there might be jokes about whether he's bringing a patient or there for himself.

He's fine with just being called Ravi! Nurses are all on a first-name basis anyway. But if Kotetsu ever asks him to just call him by his first name, he'll try for like two minutes and then give up. There might be a compromise of calling him Sarge, that's...slightly more casual, right?