Medical insurance department. In Chengdu, the tax online bought the wrong medical insurance, and if you want to get a refund, you need to go to the medical insurance office for a refund. Chengdu, a prefecture-level city under the jurisdiction of Sichuan Province, is also called Rongcheng and Jincheng. It is the capital of Sichuan Province, a sub-provincial city, a megacity, a national central city, and a core city of the twin-city economic circle in Chengdu-Chongqing area.