Neil A. Ettinger has listed for sale a four-bedroom, three-bath home at 2162 Oak Dr. in Crystal Lake Park for $649,000.

Ettinger paid $681,152 for the property in May 2005. The 3,793-square-foot home is in the Crystal Spring Lake Park neighborhood.

Carolyn Fox is the listing agent for the home.

Dr. Ettinger is a member of the pulmonary research staff at St. Luke’s Hospital. He specializes in internal medicine, pulmonary disease, sleep medicine and critical care medicine.

He earned his B.S. at Vanderbilt University and his medical degree at Washington University. He completed his internship and residency at Barnes Hospital.

There were 19 home sales in Crystal Lake Park in 2008, with a median sales price of $243,500.

Address: 2162 Oak Drive