UH St. John Medical Center - Colonoscopy

Ryan D. Christofferson, MD, MBA, FACC, is an interventional cardiologist at University Hospitals Harrington Heart & Vascular Institute, with expertise in the diagnosis and treatment of complex coronary heart and peripheral vascular conditions. He also serves as director of interventional cardiology services at University Hospitals St. John Medical Center in Westlake, Ohio. Dr. Christofferson is board certified in cardiovascular disease and interventional cardiology. He has performed hundreds of routine and complex percutaneous coronary interventions (PCIs), including STEMI, peripheral vascular and carotid procedures. He has expertise in echocardiography, nuclear and echo stress testing as well.

Ashley Simpson, DO, FACOS, FACS, is breast cancer surgical oncologist at UH Seidman Cancer Center and a Clinical Assistant Professor of Surgery at Case Western Reserve University School of Medicine. Her areas of advanced surgical expertise include nipple- and skin-sparing mastectomy, oncoplastic breast surgery, reverse axillary mapping and intraoperative radiation therapy. Before joining UH in 2019, Dr. Simpson worked as a breast cancer surgical oncologist for the Department of General Surgery, Division of Breast Surgery at The Cleveland Clinic Foundation (Cleveland, Ohio).