Zhongshan Huangpu Social Security Bureau Tel

Social security includes medical insurance. Besides, are you going to Huangpu, Guangzhou? If that's the case, take a bus from Zhongshan to Guangdong Station or Guangzhou Liuhua Station, then walk to the railway station and take bus No.240. You can also look for it on the "bus network", which is very convenient. Just enter the starting point and the ending point, and search in Baidu.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.