I highly recommend Dr. Raymond Katz. He is located at 1283 22nd Ave (between Irving and Lincoln). Both my 3 and 6 year old boys went to him when we lived in Daly City. He, his partner, and their whole staff are VERY child-friendly. They have a huge oversized bear and toothbrush that the kids get to practice brushing teeth with, a waiting room full of toys and books (lots on visiting dentists), and a wonderful way of getting kids to relax and stay put. I took both my kids when they turned 2. My youngest boy never sits still but he got through his check-up great. They do a first appointment in 2 parts (or at least they used to). The first visit is a get acquainted visit -- meet the dentist, a quick look in the mouth, learn about the tools (the teeth counter, Mr. Thirsty, etc.). Shortly after that, a second visit is scheduled and the complete exam takes place then. They have a treasure chest of inexpensive toys the children get to choose from at the end of the visit. Another great thing is that they never kept us waiting. A 5 minute wait in the waiting room is ave. Only downside is that parking is terrible so leave plenty of time to circle the block looking.

We also use Raymond Katz, and he is very amusing for the kids. He has 3 offices that I know of now: Sunset, Sacramento Street, and one in Sausalito.