Sometimes, a doctor on the run needs to enter a hospital for some reason, and do it clandestinely. But invariably there will be some patient in need of emergency assistance or bungling doctor needing help, and he will feel compelled by his Hippocratic oath to help out, risking exposing his true identity.
- In Star Trek IV: The Voyage Home, Dr. McCoy feels compelled to step in to help an old lady on dialysis (and also to save Chekov).
- In an episode of Firefly ("Ariel"), Simon Tam is sneaking his sister into a hospital, but has to stop to help save the life of a post-op patient who has a bungling doctor.
- In The Fugitive, Dr. Kimble has to help a kid who can't breath and perform an emergency tracheotomy in an elevator.
- Done often by Dr. David Banner on The Incredible Hulk. He might be undercover as a janitor, a dishwasher, or a pinball mechanic - but he can't not help someone ailing.