Many times at various doctors I have been able to hear into adjoining exam rooms. Most times I can hear conversations but can't understand every word, it's mostly muffled voices. Sometimes I'm able to piece together the general conversation, sometimes it's a complete mystery. Occasionally, usually at medical offices in older buildings with thinner walls, I am able to hear almost word for word everything being said in the next room or hallway.
When I am able to listen, it's not to gather any personal information or know a certain diagnosis. It's because I like mentally picturing the physical exam that might be taking place at that time. Curious how the patient might be dressed or undressed at any specific moment. I like hearing the instructions given and how the patient responds.
Of course, besides words and conversations, there are other telltale signs and noises that let you know exactly what is going on next door. The paper on the exam table crinkling, the foot extension or step sliding in or out of the table, stirrups snapping into position. But my favorite is the cough, pause, cough.
My PCP's office happens to be in an old office, so I can hear very clearly the conversations in the next room as well as the nurses station/ reception area that is just outside my doctor's exam room. Not only do I love listening to others, I kind of like the idea that I know others are listening to me. Sure, it's embarrassing, but I think that's what I like about it.
In the exam rooms at my general surgeon, they have two really small speakers in the ceilings that play nothing but static. It is really subtle, only noticable to me when it is quite in the exam room. I am able to hear that people are talking in the next room, but never can hear what is being said at all. The static does a great job of masking conversations and keeping your privacy.