[citation needed] In 1983, Teebi received a DHCG from the London School of Hygiene and Tropical Medicine.
[citation needed] In 1998, he moved to Toronto, Ontario, Canada, named as a Professor in the Department of Pediatrics, in the Division of Clinical and Metabolic Genetics at the Hospital for Sick Children and in the Department of Molecular and Medical Genetics at the University of Toronto.
In 2006 he moved to the Departments of Pediatrics and Genetic Medicine at Weill Medical College of Cornell University in New York.
[citation needed] While working in Canada and the United States, Teebi maintained his interest in the advancement of medical genetics in the Middle East.
He was also the original curator (at the Hospital for Sick Children in Toronto) of the now-defunct Arab Genetic Disease Database (www.agddb.org).
In 2008 he was appointed Professor and Director of the Pediatrics Service of Weill Cornell Medical College in Qatar.
[citation needed] Teebi died on his birthday in 2010, at Trillium Health Centre in Mississauga, Ontario, Canada, from complications of cancer.
He worked to develop or further the organization of important congresses in Human and Medical Genetics in various cities of the Arab world, including the Joint Symposium of the Institut Pasteur de Tunis and MEGA (1997).