Odds are you probably can't, at least not when you need the care most, which is the exact issue the article decries. Systems like Kaiser Permanente are not, but

Odds are you probably can't, at least not when you need the care most, which is the exact issue the article decries. Systems like Kaiser Permanente are not, but Kaiser is a vertically integrated HMO and structured very differently (disclosure: worked for Kaiser as a hospital per-diem for a number of years). Your best option is to make sure you know what EDs are actually in-network for you so at least you're less likely to get nailed if you have a little time to work with and aren't being transported by EMS.