The closest programs you will find are
http://www.playwisely.com/ ,
http://www.braingym.org/ , and
http://www.learningrx.com/ . I have nopersonal experience and some of the programs are considering controversial (brain gym for one). Thouugh they are not really representative of TW/Shichida school, they're the closest we have. Actually, with what little information I know of, they're not similar at all, but this is the closest you can get in the states as far as I know.
Oh wait, I take that back. I think Shichida has or had a school in New York at one point, but it was not in English. Let me go look for it...
"That right-brain-interest-circle expanded to Singapore and Malaysia, and more overseas schools were opened in New York in 2002, in Hawaii in 2003,"
http://www.shichida.co.jp/english/c1-4_school.php