Dr. Keiser's primary interest is in the care and treatment of HIV and its related infections. He has been actively treating HIV infected individuals for over 20 years. He is the Chairman of the Texas AIDS Drug Assistance Program Advisory Board in the Principal Investigator for the Texas Oklahoma AIDS Education Center. Dr Keiser has been actively involved in HIV clinical research and has been an investigator in over 50 clinical trials. Since 2006, Dr Keiser has been involved in the U.S. President's Emergency Plan for AIDS Relief and has been involved in HIV clinical care, teaching and research in Kenya. He has an active clinical research program that is centered on the outcomes of patients treated with anti-retroviral medications in Central Kenya.