If you can't, change doctors' hospitals. Be flexible. If not, go to Beijing.
Look at the selection of hospitals and departments introduced by official website of Baidu Hospital. Please be sure to read the registration instructions. Some hospitals need to make an appointment for outpatient registration.
If you don't need to make an appointment, try to make an appointment to register. If you go there like this, you can see it. If you don't sign up, I'm afraid you won't like it, especially from other places, so it's a waste of time.