That's the thing ... I don't think wands or potions of healing will be as necessary.
So how come WotC handed a dozen of them out as treasure in the Starter Set? I think WotC thinks that they are necessary to the point of them being the number one magic item handed out. By a factor of 12 to 1 AFAICT.
Course at higher levels, potions of healing will be next to worthless. By the time one is quaffed in combat, a monster will hit that PC for 2x or 3x as much damage.