Best Holistic Health Centre For Treatment?

After 2 very grim years without a chance to get over to Thailand I've now been diagnosed with severe auto-immune disease and a lot of damage etc. no cure apparently and only horrible steroids holding it at bay.

I'm determined to get myself back over and want to spend some time in one of the healing centres and get sorted Thai style.

Not looking for pampering but holistic treatment programmes with serious practitioners.

I've heard the Sanctuary probably isn't the best choice and have been thinking about the Tao health centre in Chiang Mai.

Also heard of another place with qualified medical Doctors with all alternatives available on site as well but can't find it. ( maybe Chiang Mai too)

Can anyone give me some pointers please?