I have a person physician and a physician group. I am certainly not rich. I just made a conscious decision years ago. I can usually get in to see them on short notice, they have full admitting authority if I need it. It is really rare for me to go to a convenient care facility, and then only if I am losing blood, somebody needing to give me a stitch in time, or am injured in another state on some mountainside. I have not been to an ER since I retired from the military, back in the late 90s except for my last skiing accident. Everything goes through them. The get copies of all tests and review them. They recommend my specialists and surgeons. My healthcare is covered under Medicare and Tri-Care and it is rare for me or my wife to see a bill that comes out of my pocket.
If you do not have a primary care physician, you have learned to trust, that has all your records, even military treatment records in whatever country, going back 40 or 50 years, you should consider making a change.