Dr. Ontai is a full-time Texas A&M clinical faculty member and a director of DeTar Healthcare System's family medicine residency program. He has been in practice for 30 years, including in private rural practice for a community clinic and as faculty in three previous family practice residencies at the University of California, Irvine, the University of Southern California, and Texas Tech University.

A graduate of Harvard University, Dr. Ontai received his medical degree from the University of Hawaii Medical School and obtained a Master of Business Administration from UCLA. He is certified by the American Board of Family Medicine.

Dr. Ontai has a special interest in reversing and preventing diabetes, coronary artery disease, and other chronic illnesses with whole food, plant-based diets and water-only fasting. He also uses telemedicine to see patients in rural West Texas communities and to expose residents to this important clinical tool.