My sister has an experience that #cindy66 described when writing "For about 4 years I have had a lot of different health problems with no diagnosis of anything." My sister has multiple test and procedures done over the past 2 years that has failed to explained the unintentional 30% weight loss. We want to come to Mayo for help but don't know where to start to make an appointment. We don't even know what kind of doctor to ask for. Her Medicare Advantage Plan is out of network but we are willing to pay out of pocket to get help before it's too late to help her. Where do we start?