Except that didn't happen at all.
Not only did it really happen, the story continues.
This medical clinic is located on the campus of a large corporation and is exclusively for employees of the company. Thus they have a much smaller patient load than an average clinic, and often you are the only one at the clinic and the staff is completely unhurried. The doctors are allowed 30 minutes for a routine visit, and a full hour for a physical exam.
I would regularly see this doctor outside of the clinic on the campus: in the cafeteria, walking through the grounds, in the hallways, etc. After my initial visit with him that I described, whenever I saw him he would always stop and give me a big smirk and wink, wink, wink with his eye. Nothing was said. The whole interaction was odd, but he is a pretty quirky guy so I thought nothing more about it.
Later that year the company put on a big 2 day soiree for the employees. I was there with my partner and I saw him rushing towards us from across the banquet hall. He approached, I introduced my partner and we made some small talk. The whole time we were talking he kept looking at her with that same silly smirk and giving her the wink, wink, wink with his eye. After he left, she said, "Well that was weird and creepy. What's with that guy?" I explained to her the whole story and all we could figure was that he felt like a member of an exclusive club that had seen my cock in person. Or it could be that he was just a really strange guy.