This dentist is higly recommended by my friends. He's in the San Francisco Mission district on Mission St. near 21st St. and his name is Elias Qare.
According to my friends, he is gentle to his patients and staff and is very competent. He explains the options without trying to upsell, and is my friends' favorite dentist so far.
They have recommended him to a lot of my other friends and they've liked him as well. I haven't tried him since he is too far for me.
Added bonus: he also speaks Spanish.