Agree with mothbhai about Dr Siva at Kinderclinic in Paragon.
He has great with our son and his technique is so good there aren't even any tears when it's vaccination time, although maybe that's because he's so focused on the toys e's playing with!
Also, when our little one had a very high fever, Dr Siva was there very quickly.
Dr Siva also attends at their Parkway Parade clinic on a Thursday (or maybe Friday?) if that location suits you better.