For creating or repairing Kock pouches, I can very, very highly recommend this surgeon in New York, who was trained by the late and revered Dr Victor Fazio:
Dr. Pokala Ravi Kiran, MD
Chief and Program Director, Division of Colorectal Surgery
New York-Presbyterian/Columbia University Hospital
My Kock pouch was created by Dr Fazio in 2002. I did not have even a single problem until I had valve slippage in 2018. Dr Kiran repaired it so flawlessly that I was eating full meals again almost immediately. I was very, very lucky to find him. He creates and repairs a substantial number of K-pouches every year so his skills with this very demanding procedure remain sharp. Dr Kiran and his staff are fantastic all around, and certainly well worth the cost of the travel from anywhere.