Doctors are well aware they are not omniscient. They know they are more knowledgable and experienced than you, but they aren't perfect. They can only do so much with the information that the patient gives them. And patients, like it or not, are not always the most reliable sources of symptoms or medical information. And sometimes all the testing you can do might not reveal the correct diagnosis. At that point, what do you expect a doctor to do?

Look, I'm not a doctor nor have I ever played one on TV. Hell, I didn't even stay at a Holiday Inn late night. But I did spend 15 years in the back of an AmberLamps seeing patients at their worst moments in life. Or at least what they thought were the worst moments, (sometimes it was just another Tuesday for me). I've seen a lot of doctors work up close and personal. Some were great, almost all of the rest were good, and a few were bad, (I actually witnessed a Medical Director of the ER come down and fire a doctor on the spot once). But they all tried hard and gave 100% everyday.

The patient/doctor relationship is a two way street. And weirdly, patients very often are unwilling to hold up their end of the relationship. That means you must speak up for yourself. Ask questions, refine your symptoms together WITH the doctor, and give input into your treatment plan and listen to replies. And understand that that healthcare provider may not have all the answers you are looking for.

I sincerely hope that worm died from acute alcohol poisoning caused by tequila as is traditional.

You need to pick a single doctor and stick with them. Going to see whatever random doctor that only has a few minutes to be with you is most of your problem. That doctor doesn't have the time to read through your, by now extensive, medical charts from end to end. And no, that's not all due to the US medical system, (though that bluntly doesn't help), because there simply far more patients in this world out numbering all the doctors that are available. Find a single doctor and stick with them as long as you can. Doing so will cultivate a relationship that grows and gets better with time. That will pretty much end most of your problems.

And if you must see a different doctor, they will straight up ask you why you are there to see them today. This is your chance to tell them not only what is currently wrong, but since this is a reoccurring problem, what are some of the things that have been done that worked or didn't work in the past. That helps them immensely and they love patients that do that. If they are just "regurgitating" information it's because they can't read minds and have been reduced to guessing. The practice of medicine is a two way street.