Ben Lynch has started a series of training seminars for methylation. Last October, 240 practitioners attended. There is a followup seminar coming up in March. The list below consists of people who have attended his seminar. Ben Lynch MTHFR.net Practitioner List http://mthfr.net/mthfr-resources/ There is also a list of practitioners at MTHFRsupport.com. They have a rating system in place, so presumably there is a better chance these are good practitioners. MTHFRsupport.com Practitioner List http://www.mthfrsupport.com/practitioner-2/ Then there is the list at MTHFRease.com which has been submitted by patients: http://www.mthfrease.com/mthfr/2013/02/10/mthfr-docs/ Of course, you will still want to do due diligence to make sure the person you choose is going to be right for you and do a good job.