(Use link at top of this forum page, between Logout and IRC, to see the right wiki).
As for RP, yes it is always going to be alive to some degree. I have an RP medic. He solos the Gunrunners super mutant quest. In Hub, he hangs out wearing a lab coat, like a doctor might. Being able to quickly heal people is fun sometimes - gotta have RP mood swing for it though.
PM me if you want that build, but i would point out what other guys here are saying. Default medical functions are good enough without focusing on them (like getting those perks and tagging both FA and Doc), so that it's better to focus on combat ability. Fighting skills is where tags really help. Some guys use all 3 tags on guns; they tag Small Guns, Big Guns, and Energy on the same character. I only tag Doc if i plan to level a guy up by crafting drugs. I never tag FA anymore since there is no level cap - getting them both to 200 max is only a matter of time.
That said, an RP medic can be tough enough though to solo that GR quest and get good items. (It also seems like each RP persona seems to insight different qualities in player conversations. Call yourself a doctor and wear a lab coat and watch smarter people gravitate to you.)