Sutter Health Central Valley Region President David P. Benn recently named Daryn J. Kumar as Chief Executive Officer of Memorial Medical Center. Kumar has worked for Sutter Health since 2004, most recently as the interim Chief Executive Officer at Sutter Medical Center, Sacramento. He also served as the Chief Operating Officer at Sutter Roseville Medical Center, and Assistant Administrator at Sutter Delta Medical Center, in Antioch. Prior to working for Sutter Health, he served in a variety of leadership positions with Tenet Healthcare Corporation at Doctors Medical Center, San Pablo and Pinole in the East Bay.