Yes, 23andme will tell you most of the methylation genes.
Dr. Yasko's test panel (see
www.holisticheal.com/dna-methylation-pathway-test-kit.html to order her test) is more targeted specifically at methylation genes, though it is considerably more expensive.
I am not financially or any other way affiliated with Dr. Yasko, her lab, or 23andme. I am simply a satisfied customer.