WZ,

I was treated with 3 dr.s also and I've had follow ups with all of them. Each doctor tends to look at a different thing. The ENT closely examines my oral cavity. The radiation doc examines all of the sites that were in the rad field to make sure there are no problems, and the chemo doc checks the levels of different things in my blood to make sure there are no effects from the chemo. Each doctor has a schedule of follow ups that they keep to, and as time goes on the visits get less and less. In my case, my last treatments were in September. I see my ENT every 8 weeks, my radiation dr. every 6 months, and now get to see the chemo doc once a year.
Make sure the doctors you choose to follow up with screen you for any possible lasting effects from your specific treatments.