The Nurse Practitioner (NP) assesses, plans, and implements observational and clinical research protocols in a research setting, independently or autonomous in collaboration with other health professionals. The NP is responsible for managing protocols for study subjects enrolled in therapeutic and non-therapeutic clinical and observational research studies of the MACS/WIHS Research study. This individual is expected to establish and maintain effective communication with professional and ancillary personnel, and to demonstrate a high degree of self motivation. Must be able to work with several members of the study team at various locations as needed.