Unfortunately, it is better that I do not recommend any plans, I am here to share information and I trust that you will take what is said more seriously if I have nothing to gain from it.
A few pointers:
1. If you have company insurance, at the very least the inpatient cover is international
2. For (1), whether or not you get a Letter of Guarantee (LOG) depends - usually if the company is large, and the premiums are above a certain amount, a LOG can be issued instead of you paying first
3. For an individual to buy international medical policies, it need not be expensive, but there are trade-offs, e.g. you can select a deductible (the amount you pay before insurance starts) and claim it from (1). Be prepared to wait if you go this route
4. For (3), adding anything other than inpatient can be expensive, you can decide whether or not to proceed.
If I were a foreigner, I will be very clear on the difference between local and international plans by asking the local insurer 1 question: What happens if I have a $200,000 bill and I don't have the funds. Ask the insurers directly (if like PKRR you like to do things 'without talking to agents'
)