You can go to the local social security network to check. For example, in Jinbao.com, Wuhan, any insured person in Wuhan, with his/her ID number, can enter the ID number in "Personal Inquiry" on the homepage of the website, and enter the password of ID number 12~ 17 as required. After entering, click "Personal Inquiry"-click "Designated Medical Insurance Institution" or "Designated Medical Insurance Pharmacy" to make an inquiry. The website can also inquire about the cardholder's payment, personal account balance and historical consumption.
After input, in the basic information of the insured, the social security enrollment number is the medical insurance number, which is the number on the medical insurance card.