Ted Houk

Dr. Ted Houk, shown in this file photo, runs every morning from his home in Lutherville along N. Charles St. to work at the Greater Baltimore Medical Center in Towson. (Eli Meir Kaplan / Patuxent Publishing file photo / July 11, 2008)

Dr. Theodore Houk's condition after being struck by a car on North Charles Street on Thursday was upgraded from critical to serious over the weekend, according to a Maryland Shock Trauma Center spokeswoman.

Houk, 50, is well-known for jogging 5.5 miles a day from his home in Lutherville to his job as an internal medicine specialist at Greater Baltimore Medical Center in Towson.

About 8:12 a.m. Thursday near North Charles Street and Chestnut Avenue, police said Houk was jogging and "strayed into" a northbound travel lane of the roadway, where he was struck by a 2005 Toyota RAV4 being driven by a 65-year-old woman. The woman stopped at the scene.

He was flown to Shock Trauma via helicopter, where he was listed in critical condition.

Houk's condition was upgraded to serious on Saturday afternoon, said Cindy Rivers, a hospital spokeswoman. He remained in serious condition Monday night, Rivers said.

Specifics of his injuries have not been released.