Dr. Spencer L. Penn and Marne Castillo bought a seven-bedroom, four-bath home at 35 Rex Ave. in Chestnut Hill from John P. English and Susan B. English for $675,000 on Oct. 5.

The 4,255-square-foot house was built in 1925.

Dr. Penn is an emergency physician who has practiced at Executive Health Resources in Newtown Square. He has been affiliated with Bryn Mawr Hospital.

He has a D.O.

Castillo is director at The Children's Hospital of Philadelphia.

She received her M.Ed. and Ph.D. in education and public health at Temple University in 2005.

According to BlockShopper.com, there have been 80 home sales in Chestnut Hill over the last 12 months, with a median sales price of $420,000.

Address: 35 Rex Avenue
Buyer(s): Spencer L Penn and Marne Castillo
Seller(s): John P English and Susan B English
Sale date: Oct. 5, 2009