Campos inked a minor-league deal with the Angels.
Campos was released by the Angels on Tuesday.
Campos (elbow) was designated for assignment Tuesday.
Angels general manager Billy Eppler said that Campos underwent surgery Tuesday to remove a bone spur from his right elbow, Pedro Moura of the Los Angeles Times reports.
Campos (arm) was reinstated from his rehab assignment and optioned to Triple-A Salt Lake on Monday.
Campos is dealing with nerve issues in his arm and will be placed on the 10-day disabled list, Pedro Moura of the Los Angeles Times reports.
Campos (arm) said he is feeling 100 percent and will compete for a starting rotation spot this spring, the Orange County Register reports.
Campos was claimed off waivers by the Angels on Friday.
Campos has been diagnosed with a fractured right arm and will undergo surgery, Nick Piecoro of the Arizona Republic reports.
Campos was optioned to Triple-A Reno on Tuesday.