he won't search people out to heal them, and any villager can heal when you drop them on someone
his big "help" with healing is that if a villager is sick (or the whole village is sick, as happens sometimes) and the GC throws a party, everyone who goes is instantly healed
he did have a party for me once and a farmer who didn't like crowds or dancing continued working and did not attend the party, when i checked him he was still sick
i am not sure if it was a fluck or because he did not attend the party, so
_________________________
Why is it that if someone tells you that there are 1 billion stars in the universe you will believe them,
but if they tell you a wall has wet paint you will have to touch it to be sure?