Don't leave your friends and even acquaintances to go to the hospital alone. If they don't have someone already going with them and don't explicitly tell you they don't want you there, go to advocate for them. Outcomes for sick people change dramatically when they have someone else there to observe doctors (making them know they can't get away with negligence) and note symptoms from an outside perspective.
Going to the hospital is scary and even someone totally unprepared to be a medical advocate or physical support will be better than nothing, purely from their presence. You can grab food, be there with your phone to search if theirs dies, go in search of a doctor, distract them from pain or discomfort... go with them.
