D.H.
Hi Shauna ~
The general rule of thumb is that you go to a pediatrician until the child is 18 yrs old. But I can see where a teenage boy may not be comfortable with a female doctor, but it may not be an issue (how often do females have male doctors?)
At my house, my son hasn't been to a pediatrician since he was about 4 yrs old...we switched, together, to a family practice doctor. I love having 1 doctor for the whole family! He knows what's going on with all of us, they are still up to date with what's is appropriate for kids (immunizations and stuff), and it's easier. I remember when my son was small and we'd both get sick, usually on a weekend, and we could both go to 1 appointment to be seen, instead of trying to make 2 different appointments.
good luck!
D.