Gynecological & Obstetric Associates, SC is a gynecology and obstetrics practice in Arlington Heights, Illinois. Gynecological & Obstetric Associates is made up of four caring and compassionate physicians - Sidney S. Cohen, MD, Lorraine S. Novas, MD, Vicki L. Chamberlain, MD, Jane S. Oh, MD and Emily Chang, DO. We specialize in general gynecological care, obstetrical care, preventative healthcare, menopausal therapy, laparoscopic surgery, gynecological and obstetrical ultrasound, tubal ligation, osteoporosis screening - hip and spine bone scan, hysterectomy - abdominal or vaginal, infertility, and preconceptual counseling.