The MCHD employs experienced public health professionals devoted to promoting and protecting the publics physical and environmental well-being.. The MCHD employs experienced public health professionals devoted to promoting and protecting the publics physical and environmental well-being. The MCHD has 4 divisions: 1.) Clinical Nursing Services, 2.) Environmental Health, 3.) Family Dentistry and 4.) WIC (Women, Infants and Children) Nutrition Program.