In 56 appearances last year he threw 28+ pitches in one inning only 2 other times. He threw 25+ pitches in one inning 5 times. He threw 20+ pitches in one inning only 11 times. In less than 20%* of his games he threw less than 20 pitches per inning. In 3.5%* of his games last year he threw 28 pitches per inning. No, pitchers do not do that all the time.
*Not including the All-Star game