Hospital Patient Portal. If you are a patient of the hospital or providers located at MercyOne Clinton Medical Center, please use this portal. This includes patients of Dorothy Anderson, ARNP, Amar Chiruvella, MD, Abdul Foad, MD, Mohammed Irshad, MD, Ricky Maddox, MD, Robert Magnus, MD, Michael Mankarious, MD, Tamilselvi Periasamy, MD, Rachel ....