I can only relate to my personal experience, and that would be the Moffit Cancer Center in Tampa, FL. They have a specialized unit for cutaneous cancers.
“Moffitt”
I think the further south you go the more experience doctors will have.
You might want to look up some of the doctors listed:
https://www.eyecancercure.com/the-ajcc-uicc-eye-cancer-task-force.html
https://eyecancer.com/eye-cancer/conditions/choroidal-tumors/choroidal-melanoma/
Also look up treatments.