A clinical nurse specialist (CNS) is an advanced practice registered nurse who specializes in a specific area of healthcare, such as pediatrics, oncology, or cardiology. They provide expert clinical care, conduct research, and offer education to both patients and healthcare staff. CNSs play a vital role in improving patient outcomes and enhancing the quality of care. In addition to direct patient care, clinical nurse specialists often focus on system-level improvements within healthcare settings. They may develop protocols, lead quality improvement initiatives, and collaborate with other healthcare professionals to ensure effective treatment plans. Their expertise helps bridge the gap between clinical practice and patient needs.