University Bike and Boulder Cycle Sport both have trained Specialized bike fitters (BG fit).
FasCat coaching does bike fits, they are supposed to be good.
Boulder Center for Sports Medicine has medical bike fits - this is where I had mine done, since i had a medical issue (knee).
Retul has a storefront, that's what they do - bike fits
Vecchio's has a professional fitter with one of those special fit bike jigs, I think he only does it on fridays. THis is the person who does the fittings for their custom Moots