Be aware....
One should be aware that the ordinary run of the mill GP has little specific knowledge of aviation medicine. The other thing to be careful of, is that your DAME will normally only consider those matters on the renewal checklist. Therefore there is no assurance that a real or potential problem may be picked up. I know of some that will ask you to schedule another appointment ($$) if you wish to discuss something not on the checklist.
DOING A REGULAR MEDICAL IS LITLE ASSURANCE THAT YOU DONT HAVE ANY ISSUES (that may be outside the checklist).