Only when I need to. usually just to get prescriptions refilled. The nurse gave me heck last time I took my 6 year old in. They would like to see her more often, so they can keep better growth and weight charts. She is healthy. 80 percentile for weight and height. she has remained on the same graph line since we adopted her when she was 2. I don't see the need to waste doctor time just to weigh and measure her.