Doctor may want to know when patient is over the disease, and no longer contagious
“Outside of health care workers, we also know that the Florida Department of Health tells people who have tested positive, they need two negative tests before discontinuing isolation, according to paperwork from FDOH.”
The doctor doesn't care unless it pertains to an infected healthcare worker he's working with.
Individuals may get retested to see if they can go back to work or end quarantine but it isn't the doctors driving that.