A clinical nurse specialist is a registered nurse who has attained either a master's or a PhD in nursing. This advanced practice nurse has specialized and demonstrates expertise in a chosen field of medicine for the health and well-being of patients and to improve delivery of care methods by health care workers. Clinical nurse specialists are in high demand due to changes in healthcare reform. Health insurance companies prefer patients to receive services from this discipline since they deliver high-quality health care at an affordable rate. Studies have shown when a clinical nurse specialist is part of a health care team, patient satisfaction rates are higher and there is a reduction in medical complications in hospitalized patients.