Diagnosed by GP in UK 27 years ago after 6 months post viral fatigue.
The only time I've ever seen any consultant was after 14 years of relatively mild illness I finally had to give up work and was sent to see a semi-retired rheumatologist paid for privately by my employer for a report for my ill health retirement pension. He just confirmed the diagnosis on case history and symptoms, and didn't suggest any treatments.
The local 'ME specialist service' had a GP to assess patients who, when I saw him about 6 years ago, was completely clueless. At least at that stage they were recommending pacing, not CBT or GET at that clinic - I've heard it's gone off the rails since.
I'm not well enough to travel anywhere else to see a specialist.
So I guess my answer to your question is 27 years and still waiting!