The expanded CVS store at South Lakes Village Center will feature a MinuteClinic, CVS’ walk-in health care clinic.

CVS has begun expansion into the former Footsteps running store space. That storefront has been empty since Footsteps closed at the end of March 2013.

CVS’ MinuteClinic has served more than 20 million patients since it opened the first location in 2000, a CVS spokesman said. There are more than 800 locations in 28 states. This will be the first location in Reston.

MinuteClinics are staffed by nurse practitioners and physician assistants who can diagnose and treat common illnesses and conditions such as ear infections, strep throat and ankle sprains. They also offer vaccinations, sports/school physicals and wellness programs.

Patients do not need an appointment for MinuteClinic, which is open seven days a week, including weekday evening hours. MinuteClinics accept most health insurance plans.