We only experienced Dr. Markello for a very short time, but we were very impressed with him. My son had been to other doctors many times, and we had openly expressed our curiosity at his slow and different development. When we took him to Dr. Markello, we more seriously expressed our concerns and he listened. He told him he had some suspicions and he would like to refer us to some specialists. We ultimately found out our son was autistic. No other doctor had anything to say but everyone develops differently. We appreciate what Dr. Markello did for us. He is high in our book.