I have never had any problems with the dental services I have received from Dental First Associates. However, the price for filling one cavity (that I believe had already been drilled), seemed a bit steep. Conversely, I will say that DFA have a good price for check-ups, and are flexible with appointments, while being good about reminding their patients about their appointments.
Honestly, I've never really had any genuinely negative experiences from my many dentist visits with various dentists in different states. Although getting dental work done is often unpleasant, I can't remember any instances where any dentist or their support staff did something to upset me. Nonetheless, Dr. Gupta and company do a good job, and I would recommend them.