I havent been Dr cheng long but the staff is so nice and the dentists are great. Really impressed and please with this office. Great service! It never changes. They really do cater to your needs! They dont bribe you to do unnecessary things, only what is best. I had to come back for multiple fillings and they do such a great job, my mouth doesnt swell up and the numbness doesnt last long either! Theyre the greatest Im moving on to a healthier smile!