Born 24 May 1881 at Navsari, Baroda state territory, Bombay province, the son of Pestonji and Pirojbai Bacha, of the Parsee community. He was educated at Navsari High School and the Grant Medical College, Bombay, where he won prizes, scholarships, and medals. After qualifying in 1903 at Bombay University, he served as house surgeon at H M Masina's private hospital. He then obtained a Tata scholarship loan to enable him to go to England. Here he worked at University College Hospital, took the London qualification in 1907, the Conjoint 1908, and the Fellowship 1909. He returned to India in 1910 and soon established his own nursing home at Bombay, which became one of the best equipped in India. He was surgeon to the Parsee General Hospital, surgeon and lecturer in surgery to King Edward Memorial Hospital, and an examiner in surgery at Bombay University. He also filled the office of president of the Bombay Medical Union. During the war of 1939-45 Bacha served in the Indian Army Medical Corps with the rank of lieutenant-colonel, and was specially thanked for his services to the wounded by Colonel Sir Jamshedji N Duggan, head of the Bombay War Hospital. Bacha married on 27 September 1915, Mithibai Thesildar, daughter of the revenue minister to H E H the Nizam of Hyderabad. She survived him with two sons. Bacha lived at one time at Bellevue, Chowpatty Road, and latterly at La Citadelle, Queen's Road, Bombay. He died at Bombay on 5 June 1945, and bequeathed his fine professional library to the King Edward Memorial Hospital. Bacha was a staunch nationalist.