Hi, my husband just had to do the med exam and we also had problems with the doctor and the TB testing. Luckily I caught her incompetent remarks and procedures before anything got sent in but if I were you I would get it corrected right away. USCIS will notice the problem and won't just make a guess! In my experience, things only get worse when you ignore them or delay. I would get to that doctor before he/she realizes they screwed up and do something stupid trying to cover it up and ruin everything for you. I especially wouldn't want to have to pay for a second exam because there was conflicting info on the first and so much time had gone by "no one remembers" the true result.

Just my opinion.