All you have to do is to self refer, telling them everything that is going on with you and tell them that you want to to find out all of the conditions you face and how to maximize your quality of life.
Tell the same thing to the Internist.
Mayo set me up with the Internist and two other specialists right to start with. The Internist had many tests ordered and scheduled me with several other specialists. If needed the specialists scheduled other testing. The last specialist I saw before the Pain and Rehabilitation Program was the pain specialist.
When you self refer, if you tell them only one diagnosis, like Chronic Fatigue Syndrome, Mayo doctors may refuse to see you. When my family doctor referred me for Chronic Fatigue Syndrome, Mayo wouldn't see me, saying that they don't treat that. But it is covered in the Pain and Rehabilitation Program's treatment with Fibromyalgia and Central Sensitization.
Have a great day!