This document introduces a new Health System Navigator program in Philadelphia aimed at improving linkage to and retention in HIV care. It notes challenges with late diagnosis, linkage to care, and patient retention. Health System Navigators will help HIV-positive patients navigate health systems and address barriers to staying engaged in care. Navigators will work with newly diagnosed patients, those lost to care, and those loosely engaged to improve testing, linkage, and retention through individual support and system navigation. The program is a collaboration between ActionAIDS and Philadelphia health centers.