Marco Ruiz, MD, MPH Marco Ruiz, MD, MPH, earned his doctorate from the Universidad Nacional Mayor de San Marcos, Lima Peru, and a Masters in Public Health at the Nuffield Institute for Health in England. He completed a residency in internal medicine at San Juan City Hospital in Puerto Rico, a fellowship in infectious disease at LSU, and a fellowship in geriatrics at the University of Illinois. He is board certified in Internal Medicine and holds additional certifications in Infectious Diseases and Geriatric Medicine. He is also board eligible in Palliative and Hospice Medicine. At the LSU Health Sciences Center, he is an Assistant Professor of Clinical Medicine, Division of Infectious Diseases. He also serves as Associate Director for the Geriatric Medicine Fellowship Program in New Orleans. His research interests are Non-AIDS-defining cancers (lung cancer, breast cancer, and Hodgkin Disease),geriatric oncology (solid malignancies in senior patients), aging process in HIV-infected patients (frailty syndrome), and public health in resource-limited settings (palliative care in resource-limited settings).