Hospital Medical Specialists Medical specialists are doctors who have completed advanced education and clinical training in a specific area of medicine. Obstetricians are doctors that take care of women when they are pregnant from the beginning of pregnancy to the end of pregnancy. A cardiologist is a doctor with specialty training and skill in finding treating disease of the heart and blood vessels. A neurologist is a is a doctor that specializes on the brain or the neuron system or the nervous system like the brain diseases of the brain or neuron diseases. Oncologist is a doctor that specializes with tumor or cancer and that study is called oncology. Nursing staff Surgical nurse is a nurse that takes care of the patience before, and during also after surgery. Registered nurse is a nurse that provides and coordinate patient and teach the public about different health problems, and provide tips and emotional help to people and family. Licensed practical nurse is a nurse helper who provides basic nursing care to a big variety of clienteles. For example immediate level tasks and ect. Obstetricians takes care of pregnant woman.