St. John's Medical Center acting CEO John Kren was charged with DUI earlier this month after allegedly flipping his truck and later being arrested in the hospital's emergency room. According to the probable cause statement by Teton County Sheriff's Deputy Aaron Dunlap filed Jan. 17 in 9th Circuit Court, Kren, 45, lost control of his Chevrolet pickup truck shortly after 9 p.m. Jan. 13.