Mark Zeitzer

Mark Zeitzer, MD, FAAEM, FACEP, FCUCM is a seasoned medical professional currently serving as Chief Medical Officer at NextCare since October 2025. Prior to this role, Mark held multiple leadership positions at ZoomCare from August 2015 to October 2025, including Chief Medical Officer and Medical Director of Acute Care Services, overseeing key offerings such as Daily Care, Chat Care, and the Super Clinic. Mark also served as Emergency Physician at Silverton Hospital from July 2008 to February 2022. Mark holds a Doctor of Medicine degree from the University of Arizona College of Medicine – Tucson and a Bachelor of Science in Molecular and Cellular Biology from the University of Arizona.