ha ha ha ha you said stimpacks were hard to come by you are playing new vegas.
Im playing on very hard. I guess i feel that way because i spend too many in each encounter... not like i got a choice.
They certainly are MUCH less common than in fo3.
As for doctors bags, that only requires a skill of 40. If you have 10 intelligence, all you need is a lab coat and skill magazines. You can make all doctors bags in one go, saving skill magazines from being wasted. And if you dont have 10 intelligence, you can raise it higher by mentats , etc. Not giving any spoilers, but im pretty sure you will come across at least one Skill Book too.
AND on top of that if you have survival instead of medicine, you get to make HYDRA. Who the hell needs doctors bags when you can make hydra.