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Dr. Shaw is a board-certified, fellowship-trained, cardiologist and electrophysiologist. He performs electrophysiology studies and specializes in the diagnosis and treatment of abnormal electrical activity of the heart in adult patients. His expertise includes diagnosing complex arrhythmias and abnormal electrocardiograms, catheter ablation for atrial and ventricular arrhythmias, and the implantation and extraction of pacemakers and defibrillators.

Dr. Halbreiner is the Director of Research in Cardiac Surgery and has been widely and nationally published in the field, including presentations at national conferences. He serves as the primary investigator (PI) in many international and national clinical trials as well as the PI for the largest multi-institutional collaborative research effort in cardiac surgery – Cardiothoracic Surgical Trials Network (CTSN). Dr. Halbreiner earned his medical degree at the Medical University of South Carolina in Charleston, S.C. He completed his general surgery internship at Boston University Medical Center in Boston, Mass., and his residency at SUNY - Stony Brook in New York serving as administrative chief resident and as a research fellow in cardiac surgery. He then trained in cardiothoracic surgery at the Cleveland Clinic, in Cleveland, Ohio, where he served as administrative chief resident where he had a heavy focus on aortic surgery. He has held academic appointments as clinical instructor in surgery at SUNY - Stony Brook and at Case Western Reserve University Cleveland Clinic Lerner College of Medicine. He is currently an Associate Professor of Surgery at Drexel College of Medicine and has appointments as an Adjunct professor at Carnegie Mellon University through which he has ongoing NIH and State funded research with the Biomedical Engineering Department. He currently serves as the Director of the Aortic Center for AHN with expertise in complex aortic surgery and specialized care in patients with connective tissue disorders. He is a clinical leader in this field and performs both complex open-heart procedures as well as minimally invasive endovascular procedures for aortic diseases. The aortic center has joined efforts with other institutions across the country in treatment of aortic dissections through the International Registry for Aortic Diseases, through which Dr. Halbreiner is the PI. He is certified by the American Board of Thoracic Surgery. He is a member of the American College of Surgeons, American Heart Association, American College of Cardiology, and Society of Thoracic Surgeons.

Shifeng S Mao, MD, PhD, is the chair of the AHN Cancer Institute urological oncology team. His practice and research focus on genitourinary cancers, including prostate cancer, bladder cancer, kidney cancer, and testicular cancer. He is an Associate Professor Medicine at Drexel University College of Medicine. Dr. Mao is an active researcher and the principal investigator of many clinical trials. He has active collaborations with colleagues from Johns Hopkins Kimmel Cancer Center and Carnegie Mellon University. He is the recipient of American Society of Clinical Oncology (ASCO) Young Investigator Award. He has published many research studies in medical journals and presented his findings at national conferences. His experience in cancer research gives him a unique perspective and insight into the biology of cancer, which enhances his clinical care with patients. Dr. Mao earned his medical degree from Beijing Medical University and his doctorate in medical pathology from University of Tennessee Health Science Center. He completed his residency at New York University School of Medicine and continued his studies through a fellowship at the University of Texas Medical School at Houston/MD Anderson Cancer Center.