Richard Lewis was appointed naval surgeon on 29th December 1807. He was appointed Surgeon to the Hindostan 1807 - 08 
Surgeon Superintendent Emigrant Ship
Richard Lewis was employed as Surgeon Superintendent on Sir Joseph Banks to Australian in 1828. Sir Joseph Banks brought 129 free women and children, the families of convicts. He kept a Journal from 10th May until 30th October 1828.
He returned to England on the Ellen with Dr. Rankin in January 1829.
Surgeon Superintendent Convict Ships
He was employed as Surgeon Superintendent on the following convict ships to Australia:
Morley to New South Wales in 1829
America to Van Diemen's Land in 1831
William Jardine to New South Wales in 1838
Hope to Van Diemen's Land in 1842