Bishop was shown a straight red card for slapping Portsmouth's Johnny Ertl across the face during the Magpies' 2-0 win at Fratton Park on Tuesday night and the midfielder will begin a three-match ban.
Manager Keith Curle said: "The ref said he raised his hands and if you do that you are always going to be in trouble.
"It doesn't matter whether it's a playful pat on the face or a haymaker of a right hand that knocks somebody spark out, you still get sent off. Bish knows he's in the wrong."
Teenager Fabian Spiess will remain in goal with Bartosz Bialkowski still suffering with the head injury that forced him off against Leyton Orient six days ago.
Curle's side are chasing back-to-back npower League One victories for the first time since mid-October.
- Sports & Recreation