Midtown Mercy Medical Clinic 1125 Pierce St Sioux City, IA 51105 Phone : (712) 258-6780 Business Category Physicians & Surgeons-Osteopathic Physicians & Surgeons-M.D. Physicians & Surgeons-Family Practice Midtown Mercy Medical Clinic 1125 Pierce St , Phone : (712) 258-6780 Business Category Physicians & Surgeons-Family Practice