A pediatrician is a doctor who specializes in the regular care of children, as well as the diagnosis and treatment of illness in children. Young patients are often more complicated to treat because they are still growing and developing.
While pediatricians may sub-specialize in specific therapy areas like oncology, surgery, ophthalmology, and anesthesiology, in general, pediatricians provide services like vaccinations, health exams, and treatment of common ailments and injuries. In addition, pediatricians are trained to handle the complex emotional and behavioral issues faced by children, especially during puberty.
Pediatricians normally see their patients from birth until the age of 18, although some may agree to treat patients into their early 20s, if requested.

A preventive medicine/wellness specialist is a physician who, through additional training, has become an expert in methods for maintaining good health and preventing disease. These specialists are the doctors people see when they are generally well or without a specific ailment and want to either learn how to maintain their current health or acquire better health.
These doctors will advise patients on specific diets, exercise regimens, and lifestyle habits that are suited to their particular needs. Preventive medicine/wellness specialists take into account a patient's nutrition deficiencies, physical and cardiovascular capabilities, and habits in order to advise specific vitamins and supplements to take, how much physical activity to undertake, and which habits should be broken and replaced with more positive behavior.

A dentist is a doctor who diagnoses and treats oral health issues. The most basic services dentists provide are preventative and regular maintenance treatments such as cleanings, fluoride treatments, X-rays (to look for cavities), cavity fillings. He or she also provides advice on proper brushing, flossing, and rinsing for the prevention of plaque buildup.