Dr Mayhew has been recognised for his contribution to medicine as a teacher and mentor.
He has also been awarded for his significant commitment to sports medicine as GP to the All Blacks Under 20s, the Kiwis, the Warriors, the Breakers, the Tall Blacks, canoe racing, and Yachting NZ (London Olympics, 2012).
For many years, Dr Mayhew has also volunteered his time to several provincial rugby teams including The Highlanders, North Harbour, Bay of Plenty and North Otago.