Mandatory health insurance for over 50s in Thailand only affects those on Non-Immigrant Visa O-A   File photo   Thaivisa has today spoken with Prachuap Khiri Khan Immigration in a bid to try and clear up some confusion surrounding the recent announcement regarding mandatory health insurance for Non-Immigrant Visa O-A.   Prachuap Khiri Khan Immigration told Thaivisa that the new requirements only affect people seeking Non-Immigrant Visa O-A.   The requ