At Memorial Hermann, we strive to personalize care for our patients and the communities we serve. Our volunteers play a crucial role in making that goal a reality, from helping people find their way to providing them comfort during their hospital stay. As we recognize National Volunteer Week, watch as Dr. David Callendar, MD, president and CEO of Memorial Hermann Health System, shares our gratitude for all of our volunteers and their service. Learn more about volunteering at Memorial Hermann: ht