I couldn't tell from your post what your underlying condition is, but since you reference a flare, I'm guessing colitis and given the fistula, Crohn's. Given that, you'd want a very experienced surgeon. Also couldn't tell exactly where you're coming from
If Cleveland is an easier trip (and staying at the clinic hours before/after or for family can be easier than NYC) the head IBD colorectal surgeon there is another potential consultation: Tracy Hull, MD. https://my.clevelandclinic.org/staff/704-tracy-hull.
Or in NYC, in addition to those mentioned, the colorectal surgeons and Inflammatory Bowel Disease docs at Columbia/ NY Presbyterian Hospital are world class. https://columbiasurgery.org/co...viders-and-locations.
There is also a great group at University of Chicago https://www.uchicagomedicine.o...colon-rectal-surgery.
Hopefully you'll find a system that will work with you as self-pay or who can consult with your local surgeons if that's an option.