Wondering where Expats go for their health care?

Does the company provide you with a list of doctors to go with or do you do your own research, and pick the doctor yourself?

What influences your decision (e.g., cost, travel, reputation, etc)?

I am an expat coming from Portland, Oregon graduating with a degree in Public Health.

There is no research on the topic, because most of knowledge is so generalized on many websites. So, I would rather here it from expats to get a sense of their choices.