McCullough isn't just an internet doctor, he's the most published doctor in medical journals in America. He is an American cardiologist and professor of medicine. He is currently Vice Chief of Internal Medicine at Baylor University Medical Center in Dallas, Texas and Senior Professor of Internal Medicine at the Texas A&M University Health Sciences Center. He is editor-in-chief of the journals Reviews in Cardiovascular Medicine and Cardiorenal Medicine. During the COVID-19 pandemic, McCullough advocated for early treatment, criticized the response of government public health agencies, and dissented from their recommendations. He's testified before congress after he testify in TX which changed the course of direction for TX and they opened back up their economy.