The term OB OR ENT is a job description for a Doctor of Osteopathic Medicine or an Ear, Nose and Throat specialist. A Doctor of Osteopathic Medicine is a physician who practices a holistic approach to medicine, focusing on the patient's overall health and well-being. An Ear, Nose and Throat specialist is a medical doctor who specializes in diagnosing and treating diseases and disorders of the ear, nose, throat, head, and neck.