I picked up Doctor's Orders because I was intrigued by the appearance of the Lahit in The Fall. McCoy's stint in command was an additional pleasure.
The novel was thoroughly enjoyable read and the tidbits of continuity with other works were a nice aspect.
Does anybody know when exactly the book is supposed to take place? Memory Beta has it post-TMP, but the cover and descriptions seem to place it in 2269 or 2270.