Mary Marzano, Physical Therapy Supervisor How long have you been with Sixteenth Street? I have been working at Parkway 16th Street as an employee of the SSCHC full time since 10/1/18 but I started as an APTM employee contract employee back in May of 2007 working about 15 hours per week and gradually building up to 40 hours over the next 1.5 years..