[2][failed verification] The following year he was appointed assistant colonial surgeon at Albany, then in August 1872 he replaced Growse as Toodyay's resident medical officer.
The other board members who were prominent in the district included Samuel Pole Phillips, Augustus Lee Steere, James Sinclair and Daniel Connor.
Although he soon retired from this position, Mayhew continued to live and practice as a doctor in Toodyay, helping both settlers and Aboriginals, particularly during a severe measles epidemic that broke out during 1883-84.
It seems the Mayhews' move to the edge of town was much appreciated by some townsfolk: The "Old Doctor" was popular and capable, but his wife was a difficult neighbour.
An arrangement was made whereby Mayhew and his daughter, who was appointed an acting nurse, could live in the hospital providing an emergency service.
Mayhew received a yearly allowance, while Beatrice was given £1 a week, with four shillings allocated per patient per day to cover meals.