I've been seeing a naturopathic doctor for most of my health care for about 8 years now and I couldn't be happier. Mine is Vegan, as is his whole family. I picked him in part because I knew he would not try to push meat (at the time, it seemed like everyone was telling me that fish and milk would cure all my problems!!). He made some considerable adjustments to my diet and suggested some supplements. Over time, I began seeing him for other issues too like a sleeping problem etc. Saw him just last week for help with a particularly bad cold.
Because you have had your gallbladder out... I've noticed over the years that some people who have theirs out end up having serious digestive problems (particularly with fat of any kind). I would definitely see an ND, one who specializes in vegetarian nutrition, to help you figure out what is best for you to eat now, and if you need some digestive enzymes, probiotics and such. (Yes, you can theoretically try taking these things yourself, but again, having no gall bladder makes it non-intuitive and you may have a hard time reaching success.)
I would start making phone calls. You need to explain that you've had your gall bladder out, that you are a vegetarian, and ask if the doctor feels comfortable advising you within those parameters. Also ask about her/his credentials: make sure s/he has gone to an accredited school (there are only 7 such schools in North America, you can read more about that here:
http://aanmc.org/).
What is off- limits medically for you? Registered Dieticians are usually knowlegeable. 
