Fabian, his daughter Julia Forte, and his manager, Oscar Arslanian, were driving in Arslanian's car Friday night when it was sideswiped by another car, publicist Steve Moyer said in a press release. Arslanian's car rolled over several times.
Arslanian was hospitalized at Desert Regional Medical Center in Palm Springs, and was expected to make a full recovery.
Fabian, 64, and his daughter were treated and released.
During a performance in Palm Springs Saturday night with former teen idols Frankie Avalon and Bobby Rydell, Fabian misjudged the edge of the stage and took a fall -- and wound up back in the emergency room.
"It's a miracle that we survived that accident," the singer said in a statement. "Except for being sore, I thought I could do the show. I didn't want to disappoint the audience."
Fabian is set to rejoin Avalon and Rydell for several dates in Pennsylvania and New Jersey.