I appreciate you taking your time to help me. I cannot give you details since I am self employed. The majority of physicians in the USA are self employed like me. They may take vacation, but the less they work, the less they earn. A self employed person purchases his own health insurance.
Malpractice insurance is a business expense.
Self employed physicians have the option of contributing to a retirement plan like any other self employed person. Usually, to have a retirement plan, a self employed person must also contribute to a retirement plan for his employees. What I'm saying, is the self employed have benefits, but they are also the ones who pay for the benefits. Average health and strength should suffice to be pediatrician. There are no special physical requirements although examination skills do depend on normal eyesight and hearing or eyesight and hearing which can be corrected to normal with aids or lenses.