Dennis Quaid and his wife, Kimberly, are expecting twins later this year by a surrogate mother.

The 53-year-old actor and his wife are the biological parents, Quaid publicist Lisa Kasteler said Monday. The couple married in July 2004.

Quaid has a teenage son, Jack Henry Quaid, from his marriage to Meg Ryan.

His screen credits include "The Right Stuff," "The Rookie" and "Far From Heaven."

Quaid is now filming "The Express," Kasteler said.