William M. Geisler, MD, MPH, is Professor of Medicine in the Division of Infectious Diseases at UAB. He completed his medical school training at the University of Tennessee followed by an internal medicine residency at the University of Michigan. He then completed an infectious diseases fellowship at the University of Washington at which time he also obtained an MPH in Epidemiology.

Dr. Geisler has an established chlamydia research program at UAB funded by federal and non-federal sources that studies the epidemiology, clinical manifestations, diagnosis, treatment, natural history, immunology, and genetics of genital Chlamydia trachomatis infection and its outcomes. A major goal of his research has been to contribute to the development of a chlamydia vaccine. He has over 17 years of clinical experience in the evaluation and management of sexually transmitted infections (STIs) and provides STI education and training through the Alabama-North Carolina STD/HIV Prevention Training Center. He is also on the editorial board of Sexually Transmitted Diseases and has served as an expert consultant for the CDC and WHO. In addition, he is the Clinical Associate Director of the UAB Medical Scientist Training Program.