Just my personal opinion, but I'd trust someone who'd personally experienced depression more readily than someone who hasn't. From what I understand, depression isn't that uncommon within the medical profession, but there are some things that I'd be way of. First off, that empathy could be very hard on you - you might be a better doc, but it might also burn you out. The second thing is that having it known that you've been affected by a mental disorder can hold you back professionally (despite what HR might tell you) - you may want to be discreet about that.