The head of the health authority on the South Shore has been appointed to a key role within the Nova Scotia government. Dr. Peter Vaughan will be the new deputy minister of health, wellness and seniors. Vaughan has served as the CEO of South Shore Health for the past two years. He also spent time leading the Canadian Medical Association. Meanwhile, Sandra MacKenzie will become the deputy Minister of Education. Frank Dunn will move from education to the deputy ministers post in Natural Resources. The appointments take effect April 28.