 He was made a Fellow of the Royal College of Physicians of Edinburgh and a licenceate of the Royal College of Physicians in the same year.Among Farquhar's clients were many prominent figures of the period, including the Prince of Wales, Prime Minister William Pitt the Younger and prominent politician Lord Melville.This patronage led to him being awarded a baronetcy in 1796 and was soon appointed physician-in-ordinary to the Prince of Wales.