The Case of the Disappearing Doctor

Update: Beez found Dr. B, shopping for vitamins at Sam's Club. It turns out that he is having some problems with his visa and will be back to work when they are cleared up. Thank goodness! 

What do you do when your doctor disappears?  I have had a very good primary care doctor in Las Cruces for the last three years. I started going to him because my friends recommended him and we were all extremely happy with the service he provided. He was one of those good doctors who listened and took the time to find out how you were feeling. A couple of months ago he just disappeared. At first we heard that he was leaving the doctor's group and setting up on his own, then the doctor's group started calling his patients and offering to change over appointments to another one of their doctors, saying that Dr. B. had "gone on vacation and never returned" and that they had "no idea of his whereabouts." This office has been very disorganized in the past; they cut off phone calls, don't send faxes to insurance and prescription companies in a timely fashion. We have learned to go to the office and stand there until they complete whatever task you need from them. Getting anything done over the phone is next to impossible with them. I suspect that Dr. B. was also unhappy with the office, at least I hope that's why he left. I have the feeling that he is unable to get to his patient list to let us know what is happening. So, here's the problem. I don't want to transfer to another doctor within the practice because I don't like their way of doing business. I want to know what happened to my doctor, and why he left. My big question is this: Have I been receiving quality care from him or has he been fired for some reason that I ought to know about? Where do I go to get these kinds of questions answered? Is there some kind of medical board that can help me? What would you do?