I don't know exactly how it came up, but the other nurse I was working with said something about the doctor having to give it. I dunno, I guess we don't give fentanyl on our unit? *shrug*
So I do the doc a favor and draw it up using a cannula access needle

The doc comes in and pulls the plastic cap off, exposing the red-hubbed blunt needle and asks (confusedly) "So, um, I just put this into the IV?"
I take the syringe away from her and put the plastic cap on so I can unscrew the access needle. "No, it's a needle-less system. Just screw the syringe into the luer-lock on the IV"
She turns to the patient and tries to figure out how they go together (without even alcohol wiping the IV port!). "Um, I don't usually give medications......"
"How about I give the med and we'll just say you did, okay?"
"Sounds good to me."
I don't think this incident is limited to this one particular doctor. My guess is that most wouldn't know how to give an IV med if you asked them to. Which is why my blood boils when I see doctors doing nursing jobs on shows like House.... If it were realistic, they'd have no clue.