Welcome @stargate1965z. Yes, Mayo Clinic in Rochester specializes in gender reassignment surgery. Mayo Clinic established the Transgender and Intersex Specialty Care Clinic (TISCC) in 2015. It is based in Endocrinology, Diabetes, Metabolism, and Nutrition in Rochester, Minnesota.

Here's more info about TISCC and Mayo's speciality physicians and team:
https://www.mayoclinic.org/medical-professionals/endocrinology/news/mayo-clinics-transgender-and-intersex-specialty-care-clinic-provides-a-home-base-for-transgender-patients-and-those-with-differences-of-sexual-development/mac-20502820
https://www.mayoclinic.org/departments-centers/transgender-and-intersex-specialty-care-clinic/overview/ovc-20395546