Medical Staff Medical Staff Leadership Medical Staff Officers Wafaa Alrashid, MD Chief of Staff Amal Obaid-Schmid, MD Vice Chief of Staff Peter Rosenberg, MD Immediate Past Chief of Staff Department/Committee Chairs Jamie Powers, MD Secretary/Treasurer Armen Dikranian, MD Quality Improvement and Patient Safety Chair Leonard Petrus, MD Credentials Committee Chair Gregory Giesler, MD Department of Medicine Chair Vanessa lsiaka, MD Department of OB/GYN Chair Pamela Lee, MD Department of Pediatrics Chair Daniel Laster, MD Department of Surgery Chair