Dr. Cornelius Sullivan graduated the medical school from the Medical College of Wisconsin. He did his internship at the Regions Hospital and completed his residency program at the University of Minnesota in Fairview. A fellowship followed at the San Antonio Uniformed Services Health Education Consortium soon after that. He is specialized in pulmonology and board certified in internal medicine and pulmonary disease. Dr. Sullivan has been in practice for more than 20 years and is affiliated with the Tuscaloosa Lung & Sleep.