Dr. Kumasaka has the friendliest bed-side manner of any doctor I've ever met, hands down. He is extremely kid friendly, evidenced by how kids easily warm up to him.
He is very patient and is great at explaining medical jargon in layman's terms. His very laid back nature instantly puts you and your child at ease.
Everyone I know with babies, loves Dr. Kumasaka although it's very hard to get him as your primary doctor since he has such a full patient load. But sometimes you luck out and he's on call when you need an appt that day (at Swedish's West Seattle Children's Clinic).