I've been getting my dental and ortho work done at Associated Dental for almost 2 years. I initially found them through ZocDoc and they told me I was their first patient to ever book an appointment through ZocDoc. I only used ZocDoc for my initial appointment and have since booked my next appointments during my visits.
Everyone I've dealt with there is professional and super friendly and I love how I'm able to book appointments after 5pm, so I don't have to take time off work. I usually go in at least 15 minutes before my appointment but I don't think I ever had to wait more than 5 minutes after my booked appointment time.