Medical University of South Carolina (MUSC) Health Podcast portal features both audio and video podcasts:
"Our audio podcasts are hosted by various MUSC faculty, physicians and special guests. These podcasts cover a wide range of current health topics, featuring MUSC patients, physicians, and staff. Listen to patient stories, learn about new procedures being offered at MUSC, and hear the latest news on how to stay healthy."
Cleveland Clinic also offers Free Audio and Video Podcasts for Health Professionals and patients.
Link via Medical Lecturer.