During the civil war he had a wide exposure to Surgery, and when the war ended, he left the country to specialize in the discipline. In the course of his training, he worked in many notable Teaching Hospitals abroad; Charring Cross, St. Bartholomew's, St. Mary's, St. Goethe's Epson District and St. Thomas' hospitals and other hospitals in and around London between 1972 and 1977.
While abroad, Dr. Obiora had further exposure to various medical disciplines including Urology, Orthopedics, Gastroenterology, Ontological Surgery, Transplant Surgery, Chest and Cardiac Surgery as well as General Surgery.
On returning home in 1977. he served as a Senior Registrar in the Burns and Plastic Surgical Unit at the Lagos University Teaching Hospital, after which he worked at the peaediatric Surgery unit He later set up and headed the Trauma Unit of the Hospital.
Dr. Obiora is a Fellow of the Royal College of Surgeons, Edinburgh, The West African College of Surgeons, Nigerian
Post Graduate Medical College, International College of Surgeons and a member of the World Orthopedic concern.
Among his many social interests, he is a member of Ikoyi Club. He is presently the President of the International collect of Surgery (Nigeria Chapter) and holds the traditional title of Onya Ozoma which is a cabinet ranking Chieftaincy title on Onitsha, Nigeria.