Getting definitive info for a friend... He is a resident of California, USA. He will be applying by mail for a Non Imm O-A (M) Visa. He will have the 800K + in his bank account for 3 months at time of application. Finer points needed: easiest way to get "police" background cert. (or proper term). Same for medical. What form used? He can find a doctor. Funds - Bank documents needed? Noterized by whom? Very recent Bank Statement I suppose. Insurance: I downloaded the form from here - but he may opt for Thailand based health insurance - opinions on this. Other things / info / advice? And yes we will check out the LA Thai Consulate on this.
TLDR : Answer Summary
A U.S. resident applying for a Non-Immigrant O-A (M) Visa needs to ensure they have 800,000 Baht in their bank account for three months prior to application. Key requirements include obtaining a police background check and a medical certificate that must be notarized, alongside a completed visa application form and a letter of guarantee from the bank. The applicant should check the LA Thai Consulate's website for the latest information on health insurance requirements, as these change frequently. There are options for getting health insurance in Thailand, but verification will be needed that it meets immigration standards.