San Marino, CA
We have three children under Mark Powell's care and we couldn't be happier. Yes, it is a busy practice, but there is no other doctor you would want if there is a problem. He is extremely knowledgable and well connected - he will refer you to the best specialists if there is an issue (we know this from personal experience). He also takes the time to worry about your children as if they were his own. We've also had occasion to see the other three doctors and have been happy with the entire practice. The front office is also great.
PROS: Caring, friendly, smart doctors.