What std's should a doctor screen for during an annual exam?

STD screening. Usually no screening for STD's is required unless you think you have had an opportunity to acquire one.
Depends on risk. I recommend gonorrhea, chlamydia, HIV and syphilis routinely. If the patient has not been vaccinated then i also recommend hepatitis b. If vaginal discharge or itching is present then i include trichomoniasis. In some cases i also include herpes 2 antibody testing.