I've read mixed or not good opinions about him.
Is anybody know him?
Three members of my family have seen him and all had large improvements under his care. Whether he's the right doctor for you depends on what you're looking for and what you need.
If you're looking for emotional support, he's probably not your guy. If you're looking for a cooperative doctor-patient relationship, he's not your guy. If you're looking for alternative treatments, he's not your guy. He's old, and old-fashioned. He has a my way or the highway attitude. He doesn't use supplements much, if at all.
If you're looking for a doctor in the midwest who has an excellent chance of improving your condition, and you believe pathogens are a significant part of your problem, then he's the best chance you have.
I found him to be kind, and very personally invested in improving the health of my family members. He gave us exactly the treatment we needed at the time and argued successfully with our insurance company to get it.
If you live in the midwest, and are unwilling or unable to travel, Dr Lerner is really your only option. You just have to be willing to take him as he is.
I've heard of Dr Guyer in Indianapolis, but what I've heard doesn't encourage me to see him. He seems to be more into fibro and chronic fatigue than the neuroimmune illness ME/CFS. However, if you want hormone and nutritional therapy, or other treatments not as commonly used by top ME/CFS specialists, he might be worth trying. Just be prepared for the fact that he is expensive (or so I hear).