First, let me say that I’m about eight years out of date on this, so I can’t comment on the specific companies. I did used to help companies figure out what to do for expatriates being sent to remote locations, and how to get medical coverate. So, I can offer some suggestions about how to pick a company and a policy. There are two concerns with “international” health care: access and payment.
Access: You get sick in Small Town, Undeveloped Country, and you need to find a doctor or hospital for treatment. You want one that meets U.S./international standards for cleanliness, sterilization, modern treatment, reasonable equipment, etc. So, the first problem is possibly even finding one. This isn’t so much of a problem if you’re in Belgium, say, but it is if you’re in Kenya.
Now, in emergencies, like if you’re hit by a car, you may not even be conscious, so you’re going to get what you get. But if you’re talking about (say) an intense abdominal pain, you want to select where you get treated. Be sure that the insurance you get has some sort of toll-free international dial-up number, so that you can call them and say, “I’m here in Scrubsville, Nigeria, and I need a doctor. Here’s my ID number,” and they’ll tell you to go to Dr Wossname and give you her phone and address, and they’ve vetted Dr Wossname meets Western standards for medicine and speaks English. They’ll provide access, in other words: that’s one of the considerations you’ll use in selecting which company to use.
Part of access is convincing the medical institution (doctor, hospital, whatever) that you can pay. If the doctor is registered with the insurance you use, that’s not a problem. Otherwise, it can be: you need an insurance that is recognized in whatever country (or countries) you’re going to be in. You check in to the hospital, the administrator will ask how you’re going to pay, and you need to give them some sort of ID that they will accept. Alternately, you may need to give them a toll-free number to call to verify that there are funds standing behind you. So, in selecting an insurer, be sure that they can provide that service.
Payment: This is usually the easy part. However, depending on where you are and what the policy says, payment might be reimbursement – that is, you have to pay directly and then your insurance will pay you back. That can be a headache. So, this will be another area for you to investigate.
Finally, there’s the question of medical evacuation. If you’re in the Bangladesh and need any serious treatment, you’re not going to trust a local hospital. You want to be medically evacuated to the nearest western-standard hospital (like, Hong Kong.) That’s expensive, and you want to select an insurance that will not only cover the costs, but will arrange for everything for you.
Hope that’s helpful.