Mission Community Hospital
Theiring is the chief executive of Mission Community Hospital in Panorama City, a safety-net nonprofit hospital that opened in 1923, making it the oldest in the San Fernando Valley. Theiring was recruited as the hospital’s chief financial officer and was promoted to chief executive in 2011. He is on the board of the Valley Industry and Commerce Association and serves as secretary for its executive committee. He is a trustee at United Hospital Association. He also serves as a trustee for Saybrook University. He previously served on the board of the Hospital Association of Southern California.