i send my boy to the GP near my place for his vaccinations as well.
the health booklet has some pages for the doctor to do check up on his growth, like sitting, crawling, flipping, weight and height..
so depending on the how old when i bring my boy in, the doctor will check on him accordingly...
his next check up will be from 15-18 months..
which coincide with his MMR vaccination.
hope this helps.