My father, like the landlord, used to work in Guangzhou and then went to Panyu, but his hukou is still in Guangzhou. Therefore, you can only pay for medical treatment in Guangzhou. Even if you are in hospital, you have medical insurance in different places. If you want to see a doctor and use medical insurance, you must go to Panyu to see a doctor.
However, it seems that it will take two years for Guangzhou medical insurance to merge with Panyu medical insurance, so wait!