His areas of expertise consist of spine reconstruction, minimally invasive spine surgery, and spine problems. Dr. Greenfield is an in-network provider for Humana HMO, Humana Bronze, and Humana Catastrophic, as well as other insurance carriers. He is a graduate of Howard University College of Medicine and a graduate of Howard University Hospital's residency program. He has received the following distinctions: President's Lifetime Achievement Award for National and Community Volunteer Service and Top Regional Doctors in Orthopaedic Surgery, Castle Connelly. Dr. Greenfield is conversant in Spanish.