Thanks for the info. It is a starting point.
yoli
Baylor is the best place to go by far from what I've heard:
http://www.debakeydepartmentofsurgery.org/home/content.cfmproc_name=diverticulitis&content_id=274
There are a couple of other places but I don't know anything good/bad about them:
http://www.houstongastro.com/
http://houstoncolon.com/
When you get your referral, please visit ratemds.com to ensure that they have a good person-rating.
Good luck and Godspeed,
Sam