Hamilton Leonard Cessac is a board certified Family Nurse Practitioner. He graduated from the University of Texas Medical Branch with a Master's of Science in Nursing in April 2006. He graduated with a Bachelor of Science in Nursing from Florida State University in 1996. "Len" went on to work as a staff nurse in Emergency medicine for 10 years. During that time, he worked in Maine, Georgia, Arizona, California, Florida and Texas. Len worked as a Family Nurse Practitioner for an Internal Medicine practice before joining Houston Center for Infectious Diseases in July 2008. His clinical interests include Pneumonia and Bacteremia.