Claim: Gaspard Adolphe Chatin became Chief Pharmacist of the Beaujon Hospital in Paris in 1841, and then at the Hôtel-Dieu de Paris (supposedly the oldest operating hospital worldwide) in 1859.
Evidence: In 1841, he became Chief Pharmacist of the Beaujon Hospital in Paris. and in 1859, at the Hôtel-Dieu de Paris. It was supposedly founded by Saint Landry in 651 AD, making it the oldest hospital in the city and the oldest worldwide still operating.