When we were using ACA I had to be very careful when selecting a plan. Similar sounding names like ""YourInsure Select" and "YourInsure Connect" where the deductibles and copays were the same and the only difference was one was a much narrower network of providers.
Also, some providers would accept "YourInsure" employer policies but specifically excluded the ACA (Marketplace) policies.
In my experience my doctor's office knew that I had an ACA policy but they would not have known if I was getting a subsidy or how much.
Married, both 68. DH retired June, 2010. I have a pleasant little part time job.