Whitner was arrested in the Buffalo suburb of Hamburg last Saturday after police were called to his home in response to a fight with a woman, police said. He was arraigned on the violation and released.
Whitner declined to comment after practicing with the team Thursday.
Bills spokesman Scott Berchtold said in a statement the team was aware of the charge and was gathering facts.
"The National Football League has a personal conduct policy that governs these types of situations, and the Buffalo Bills will adhere to that policy if there is any truth to the accusation," Berchtold said.
Whitner is due in court Nov. 20. Hamburg Town prosecutor Dennis Gaughan said the non-criminal offense is punishable by 15 days in jail and a fine of up to $250.