Dr. David Smith is a pediatrician practicing in JACKSONVILLE, FL. Dr. Smith is a doctor who specializes in the health care of children. As a pedicatrician, Dr. Smith diagnoses and treats infections, injuries, diseases and other disorders in children. Pediatricians typically work with infants, children, teenagers and young adults up to age 21. They practice medical care as well as preventative health care. Dr. Smith can oversee and manage the physical, mental and emotional health of their patients.