[vkou]

Is their GP the only practitioner in-network for them? Their network has one member?

[bsder]

No, but changing your GP normally requires a new patient consult.

Many GPs aren't taking new patients (or at least from whatever insurance you have) or the initial new patient visit may take 4+ months to schedule.

GP is not a particularly popular choice for doctors as it pays significant less than any specialty does.