Stephen practiced for sixteen years as an infectious diseases physician in Atlanta, Georgia. Following medical school, Stephen completed internship and residency in Internal Medicine at the Pennsylvania Hospital in Philadelphia. He continued his training at the University of Pennsylvania, completing his fellowship in infectious diseases. During fellowship, his clinical research focused on AIDS-related chronic diarrhea and wasting syndrome.
Stephen relocated to Atlanta after fellowship, joining Infectious Disease Specialists of Atlanta, where he later became a partner. Afterward, he was a founding member of AbsoluteCare, a private practice serving indigent patients with HIV. In addition, Stephen was medical director of Sterling Institutional Review Board, a large central IRB in Atlanta.
Stephen joined Pfizer in 2007 as an regional medical research specialist (RMRS) in HIV. Since that time, he has worked as an RMRS in Hepatitis C, ID, and currently, he is an RMRS in vaccines. Also of note, Stephen is co-founder and co-lead for the Pfizer Center of Excellence on Active and Healthy Ageing.
During his career, Stephen has had extensive research experience, as a principal investigator and sub-investigator in many HIV and infectious disease clinical trials. During the last several years, Stephen has also focused his attention on teaching children and teens the value of social action and community service.