I haven't spoken to Dr. Check since my initial consultation. However, I haven't really felt the need to yet. The nurses have always been able to answer all my questions. However, I know that I can request a call from Dr. Check if I'd like one. As far as the nurses/staff, I actually have found that they are really good about returning phone calls. I try to be very polite and I find that I'm treated the same way in return. Good luck!