For medical cert. Go to thai embassy web there is a medical form which u need to take to yr doctor to test for tje disease and get sign off.
Medical insurance, go to AXA web Thailand they have insurance especially for non oa visa.
Non criminal record, go to fbi web, (you have to dig in their site) download the form, select the place for lifescan. Take the form and do the lifescan results should be available in days. I got mine non criminal letter before i got home. I had my scan @ a fedex center.
exited bkk on dec 2024, the re-entry permit counter was at the same floor as the immigration counter.
Take esculator up 2nd floor as if you exit regularly, before enter the immigration line on the right, go stright the reentry counter is stright ahead - u cannot miss it.
There were also staffs before the immigration line - they can also assistant.
It depends on whats your purpose of the insurance, if only to satisfy the OA requirements, the min is around USD 200+/year with AXA. But dont plan on using it for actual medical benefits, as deductible is very high.
If u r planning on a actual usable insurance, than it depends on yr age and any pre-existing conditions.