I don't recall seeing this question somewhere: have you ever encountered your doctor outside of his or her office, at the foodstore, at a party with his or her spouse, in the locker room of the YMCA? Was it awkward for some reason for you and/or for your doctor? Did he or she recognise you?
In a twisted example, a friend from Manhattan with whom I shared physical exam experiences once found one of his doctors online in a chatroom. The friend was holding a sex party in his apartment and, as was often the case, needed to see his doctor- or any interested person- naked first. According to my friend, the doctor did not make the connection, could not recall my friend as having been a patient once (not that my friend mentioned this to him). It was a complete turning of the tables as to who would be dressed and who would be undressed and inspected.