Col. Nathan T. Kellett is the Commander, 633d Medical Group and Director, Ambulatory Surgery Center, Joint Base Langley-Eustis, Virginia where he leads 1,400 active-duty and civilian medical personnel. In this role, he is responsible for ensuring maximum wartime clinical readiness, ensuring ready medical forces and medical ready forces while providing high quality, safe and trusted patient care for 382,000 beneficiaries in the Tidewater Market.