Dr. Cordray is a graduate of Oral Roberts University and Oklahoma State University-College of Osteopathic Medicine, where he completed his specialty training.
He has been involved with missions since 1983. He has traveled to Central America, South America, Africa, Asia, and Europe helping the poor and destitute.
He has authored the book, Staying Healthy on the Missionary Field, out of his missionary experiences in order to help others who embark on such adventures.
Dr. Cordray is a board certified Otolaryngologist (ear, nose, & throat)-Head & Neck Surgeon and is in private practice in Tulsa, Oklahoma.
Dr. Cordray has been involved in research of chronic sinusitis and allergic rhinitis with some of the leading (Otolaryngologists) Ear, Nose, & Throat doctors in the US. The studies include treating allergies and sinus diseases with the Dead Sea salt solution in various ways. He has published several articles in peer review journals.