From what i've read recently, it may take as long as 15 years for many to get a correct diagnosis for a chronic problem. how can one cut through the interference from the medical and insurance conglomerates so that a proper diagnosis can be obtained in a more timely fashion?

So many people go from doctor to doctor and have surgery after surgery to correct or treat a condition that, after many years of wasted time and money, they find out they don’t even have. And once the proper diagnosis is finally made, it turns out that some of the treatment given for the incorrect diagnosis actually aggravated the true condition.
ex.: arachnoiditis and lumbar punctures