M.G.
We've been with Drexel Hill Pediatrics since our little guy was born almost 3 years ago. We've been happy with them over the past few years. They have Saturday hours which seem to be mostly for sick children only but they do have evening hours which is quite convenient for those well baby check ups if you are working. I've had to call them in the middle of the night, Sundays, etc and someone always calls back right away.
You may want to visit the practices you are thinking about to see what they look like and get a feel for the place and the doctors. We made an appointment and talked with one of the doctors while I was pregnant so we knew which doctors our son would see & we would see in the hospital when he was born.