This is a Chaumière (cottage) near Rouen in France. Traditionally the thatched [more thatched homes at www.naturalhomes.org/thatch.htm] roof is topped with a bed of clay where iris are planted. The roots, or rather rhizomes, of the iris helps to mesh together the reed ends in the thatch and remove excess moisture from the ridge. Normandy chaumière often have a flint foundation with half-timbered walls with torches (French cob) on laths (wattle) as the infill.
Doctors were highly valued but to today's standards, they are very poor at their jobs. Rich people are the only ones that can really afford treatment and medicine because doctors charge for their services. http://www.historylearningsite.co.uk/medieval-england/health-and-medicine-in-medieval-england/