The Chemical Dependency Center (previously known as The Randolph Clinic) is located at the corner of Randolph Road and Billingsley Road.  That corner is a 3-way stoplight with Billingsley Road going off only in one direction.  Once you reach that corner, turn on to Billingsley, turn right almost immediately into the parking lot, and enter the building by any entrance.

If you're coming from uptown Charlotte, go out 4th Street.  The street changes name to Randolph Road when it passes Presbyterian Hospital at Hawthorne Lane.  Go about 2½ miles and, kazam, you'll be at the 3-way intersection of Billingsley and Randolph. 

If you're coming from any other direction, you might want to find the intersection of Randolph and Wendover and drive about ½ mile south (toward uptown Charlotte) to that 3-way stoplight.