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Yes, I'm sure they would, but ss far as I know, most of the microbes and viruses are harmless comensals of mankind.

Most of the non-harmless ones can be washed off with soap and hot water, and/or hand sanitizer. Occasionally, I have heard, some bad ones can colonize on hands, under fingernails, in the creases of the fingers, in and around jewelry, such as MRSA.

A nurse should wash her hands as she comes into your room, and as she leaves it. So, imho, should the doctor. Hand sanitizer is considered an acceptable substitute, but it should be enough to wet the hands on all surfaces.