Hello, Marc! I’m Dax. Orlin Dax. I was Chief Medical Officer on the USS Aventine which means my medical specialties were across the board with heavy focus on surgery and emergency medicine. But I also did research in alien physiology and interstellar blood borne pathogens. But my previous host was a Starfleet counselor so that experience is also forefront in my mind. Although technically I suppose my license has lapsed since Ezri died, but that’s complicated since I’m alive and retain all of her memories and knowledge. And all the memories and knowledge of the other eight hosts, for that matter. But none of them were medical professionals so that’s irrelevant to your question. It’s complicated. But I’m a good doctor. I promise!