How can i keep newborn safe for doctors visit? we have a healthy only side waiting room but everyone leaves out of the same door after check out.

Infant carrier/cover: If you are that concerned you can invest in a cover that can cocoon your baby inside the infant carrier. A baby blanket works as well. I think the effort is somewhat of a waste, since most germs are carried to your baby on hands, not in shared air. Just avoiding the friendly touch of strangers works wonders to keep them safe.