You can learn a lot about the field of health from going on a tour of a medical institution. Check to see if Vibhavadi Hospital is open to the public while you're in the area.
This health care institution is in Chatuchak, a destination that has so much on offer! Chatuchak Weekend Market, Vimanmek Palace, and Victory Monument are other worthwhile attractions not far away when you've finished up at Vibhavadi Hospital.