Katherine A. Arbuckle has been named Chief Financial Officer of Ascension Health, the nation's largest Catholic and nonprofit health system. Arbuckle comes to Ascension Health from Bon Secours Health System, Inc., where she has been Executive Vice President and Chief Financial Officer since 2006. Prior to joining Bon Secours she was Vice President, Finance for Ascension Health beginning in 2002. Earlier she was with St.Vincent Health in Indianapolis, a member of Ascension Health, and Clarian Health.