Sulu nodded at Jack's question, giving Ianto a reassuring smile. "It doesn't matter if you're not part of the crew. He'll want to help you because you need help, and it's not like you need to pay him for it or anything. There hasn't been a crisis lately that would make it hard for him to see you, either."

He shrugged and sipped at his tea before adding, "And it wouldn't matter anyway. Your health affects my health, and as an officer, it's important that I'm not distracted from my duties. Even if he wasn't the best doctor you could ask for, he'd still help on that fact alone." But McCoy was the best doctor Starfleet had to offer, as far as Sulu was concerned. His entire crew was the best. "I know that he'll be able to help, and willing to as well." He had to, there was no other way this would work. If McCoy didn't know what to do... who else would?