This is more than a New York issue: New health plans sold through exchanges not accepted at some prestigious NYC hospitals – The Washington Post.
Be careful out there.
Another issue is a vast majority of exchange networks are “in-state” only. If you live on a state border that could be a problem. That is the case in Colorado on the Connect for Health Colorado Marketplace with the exception of Rocky Mountain Health Plans PPO offerings, which have a nationwide network. Also available in Colorado but NOT on the Connect for Health Colorado Exchange is Assurant Health, also with a Nationwide network.