I have the same problem can not finish upgrading the medical wing , printed a list with all the safe houses and checked them two times and did not find any that would let me read the situation board or let me talk to the person , no more encounters have show up, I need 340 more credits to finish it. What do I need to do ?
Check all the missions as well. If I remember correctly they give points towards medical wing (some of them do anyway). If the mission icon is green then its for medical wing points, blue and yellow are for the others. If you have done all the missions and encounters and still have points remaining. Then queue up for a mission, leave if you are promoted to leader, and mooch off someone else points. Find someone who hasn't done all their encounters and whatever and then just go do the encounters and whatnot for them. Just make sure you are in their session, check that by going into your menu and under the bottom middle tab you can see who's session you are in.