Dr Zha is my pulmonologist. I was seeing her before my MAC was confirmed. I am very happy with her and she seems to be tops in the field. I just happened to get lucky there. I had not been diagnosed with MAC until after seeing her. I do not know if she is taking new clients. It is difficult to schedule an appointment. My initial appointment took almost 6 months, but worth the wait in my case. Zoom calls have worked when she can schedule testing and I don't meed to be seen in office. Hope this helps.