Children and parents crowd the waiting room in the United Health Centers clinic for low-income patients in Parlier. It's a busy morning, and Dr. Rogelio Fernandez is seeing patients one right after the other. At this moment, he's treating 35 year old Yesenia Campuzano of Reedley. The birth control implant in her arm caused acne, so Dr. Fernandez is surgically removing the tiny, tube-like device. She's feeling the incision, so she needs more of the local anesthetic.