Louis Diab, MD

Louis Diab, MD, is a board-certified Internal Medicine hospitalist. He earned his Doctor of Medicine degree from the University of Texas Medical Branch School of Medicine at Galveston in 2017 and completed his Internal Medicine residency at Baylor College of Medicine in 2020. Dr. Diab joined Kelsey-Seybold in June 2025.
Dr. Diab was inspired to pursue medicine by his childhood pediatrician, a compassionate and community-centered role model whom he also had the unique opportunity to work alongside during medical school. As a hospitalist and nocturnist, Dr. Diab specializes in the overnight management of acute medical conditions for hospitalized patients, responding to emergencies and ensuring continuity of care during the night. His clinical interests include acute care medicine, cardiology, gastroenterology, and infectious disease. Dr. Diab’s favorite parts of practicing medicine are helping people through some of their most vulnerable moments and learning from the dynamic nature of hospital medicine.