What are the requirements for applying for a retirement visa (O-A) in Thailand, especially concerning medical insurance coverage?

The O-A visa for retirement in Thailand mandates a minimum of 12 months of medical insurance coverage upon application, reflecting the one-year duration of the visa stamp. An individual attempting to apply must demonstrate this coverage as part of the requirements. Alternative approaches include applying for a shorter-term visa with the possibility of conversion later, although it's unclear if full proof of insurance will still be necessary in the current context. Clarifications also indicate that an Australian citizen intending to apply for the O-A visa must do so from Australia, not from Indonesia.