Dr. John is a board-certified gastroenterologist.

David Jennings, D.O. is a physiatrist at Saint Francis Health System in Tulsa, Oklahoma. Specializing in physical medicine and rehabilitation, Dr. Jennings is dedicated to helping patients restore function, improve mobility, and achieve their best quality of life. With expertise in treating conditions such as chronic pain, traumatic brain injuries, strokes, musculoskeletal injuries, and neurological disorders, Dr. Jennings takes a personalized approach to patient care.