The Northwest is filled with Craftsman-style homes built of natural materials like wood, river rock and stone – hundreds of them in our area.

But the waterfront mansion belonging to Dr. David Chang and his wife, Dr. Pilin Chang, has taken Craftsman to a whole new level.

He is a founder and principal of Bellevue Spine Specialist; she is a retired pediatrician.

Their imposing Bellevue estate, with its 110 feet of west-facing waterfront, is listed for $8.989 million. Brokers Tere Foster and Moya…