Children’s Well-Visit Schedule Infants and young children need to see their doctors or nurses more often than older children and adults, especially when they are very young. It’s important to make sure that you have all the information you need to help your child grow and develop, and to catch any problems as early as possible. Children, teens, and young adults under the age of 21 should receive well visits according to the following schedule. Ages 0-1 (Infancy) Well visits at ages 1-2 weeks, and 1, 2, 4, 6, 9, and 12 months. Ages 1-4 (Early Childhood) Well visits at ages 15, 18, and 24 months, then at 3 and 4 years old. Ages 5-21 (Middle Childhood, Adolescence, Young Adult) Well visits annually (once every year).