To extend a Non-Imm O Visa in Thailand based on marriage to a Thai national, it states you require a police check (I have this document) and a Medical Certificate.
Question: can I obtain the Medical Certificate from a clinic/hospital in Thailand ?
TLDR : Answer Summary
To extend a Non-Imm O Visa in Thailand based on marriage, you need to provide a Medical Certificate and a police check. The question asks whether the Medical Certificate can be obtained from a clinic or hospital in Thailand.