Mr Anderson (48) broke his ribs and a collarbone after being thrown from his motorcycle and was airlifted to hospital.
Deputy Chief Fire Officer Mark Hutton said Mr Anderson was "in good spirits" when he visited him in hospital yesterday.
"After some rest and recuperation, he'll be back on deck."
Sergeant Ian Kerrisk, of Alexandra, said the accident happened when Mr Anderson was riding along Loop Rd, near Becks, and his motorcycle left the road on a moderate right-hand bend.
"It's too early to speculate on the cause of the crash and too early to establish whether any charges will be forthcoming," Sergeant Kerrisk said.
However, police were satisfied neither speed nor alcohol were involved.
Road conditions and visibility were good.
Mr Anderson was riding on his own.
Alexandra and Ranfurly police, including a serious crash investigator, attended the accident, together with a fire crew from Omakau and ambulance staff and a doctor from Alexandra.
Sgt Kerrisk praised the "professionalism" of those at the scene.
"It's always difficult in smaller communities to have to deal with someone you know personally and that was certainly the case here, given Mr Anderson's position with the emergency services."
Mr Anderson was recently awarded life membership of the New Zealand Fire Service, after 21 years' service.
He joined the fire service in Port Chalmers in 1989 and transferred to the Alexandra brigade in 1996, becoming chief fire officer in 2003.
In his former role as a police constable, he was one of the first at the scene of the 1990 Aramoana massacre.
His friend and colleague Sergeant Stu Guthrie was one of the 13 people killed by David Gray.
