It is unfortunate. Another possibility is that the patient didn't list themselves as Jewish when they registered, which means that we have no way of knowing they were there. Finally, if the patient is sleeping or out for tests, we will leave our card but we won't be able to visit. Our group is over 30 years old and has always visited hospitals. Recently, at one of our group's regular meetings, we discussed this question.
Some volunteers visit local homebound patients and nursing homes on their own.
If we had more volunteers we would be happy to expand. Anyone who would like to be involved in helping us expand should contact the coordinator. No, we have two men who visit the hospitals regularly and several men who walk to the hospital on Shabbos. All our volunteers visit both male and female patients. We'd be happy to get more male and female volunteers.