Martha H. Marsh, age 72. Ms. Marsh has been a director of the Company since 2015 and became the Lead Independent Director in 2020. She retired in 2010 as President and Chief Executive Officer of Stanford Hospital & Clinics, a position she had held since 2002. She also served as the Chief Executive Officer of the University of California Davis Medical Center from 1999 to 2002. After beginning her career at Arthur Andersen in 1975, she has served the healthcare industry for more than thirty years in a variety of leadership positions, including as Senior Vice President for Professional Services and Managed Care at the University of Pennsylvania Health System. Ms. Marsh also served on a variety of healthcare boards and committees. She currently serves on the board of AMN Healthcare Services, Inc. Ms. Marsh earned a Master of Public Health in health administration and an MBA in accounting from Columbia University. She received her bachelor’s degree in History at University of Rochester.