Wantz was recalled from Triple-A Salt Lake on Tuesday.
Wantz missed out on a spot on the Angels' Opening Day roster but will join the team ahead of Tuesday's game against the Astros. The 26-year-old received his first taste of big-league action in 2021 and had a 4.94 ERA, 1.24 WHIP and 38:11 K:BB over 27.1 innings.