David Joel Hackam, MD

Chad Crigger, M.D., M.P.H., is a pediatric urologist at Johns Hopkins Children’s Center and an assistant professor of urology at the Johns Hopkins Brady Urological Institute. He also serves as the Associate Program Director of the Urology Residency Program. After growing up in Charleston, West Virginia, Dr. Crigger attended the University of Richmond, where he majored in biology. After college, he returned home to West Virginia and obtained his medical doctorate from Marshall University and a master’s in public health from West Virginia University. He then completed an internship in general surgery and a residency in urologic surgery at West Virginia Ruby Memorial Hospital, where he was drawn to pediatric urology, particularly the reconstructive aspects that draw on principles from several fields including pediatric plastic surgery. This, and a chance visiting professorship by John Gearhart, M.D., inspired Dr. Crigger to pursue training in major reconstructive pediatric urology at Johns Hopkins, where he completed a fellowship. Relying on his background as a camp counselor, Dr. Crigger makes his patients active participants in their care whenever possible, often through sketching their condition. He is a member of multiple professional societies, including the American Urological Association and the American College of Surgeons. A researcher and director of pediatric urology research, he has published more than 50 articles in major journals and contributed to over 20 book chapters on pediatric urology. Dr. Crigger’s research focuses on his passion for major congenital anomalies, particularly the exstrophy-epispadias complex, about which he has multiple projects spanning the basic and clinical sciences. Additionally, with extensive training in robotic surgery, Dr. Crigger serves as director of robotic surgery for pediatric urology. His team looks for ways to safely apply the robotic surgery platform, including single port surgery, when feasible. His philosophy in practicing medicine is simple: to “provide the greatest benefit through the most up-to-date and least morbid treatment options possible.” Regarding providing care for patients and working with families, his focus is singular. When talking with parents, he can often be heard saying, “I know that, whether I am performing surgery or offering my professional recommendation, I am caring for one of the most important people in your life. I take that responsibility seriously and will do my very best to deliver the highest level of care possible.”

Dr. Gihan Naguib is a pediatric gastroenterology specialist in Baltimore and Annapolis, caring for pediatric patients with liver diseases. Dr. Naguib earned her M.B.Ch.B. from Alexandria University Hospital. She completed residencies at the University of Alexandria and St Joseph's Regional Medical Center. She performed fellowships in pediatric gastroenterology at Washington University School of Medicine in St. Louis and the University of Maryland School of Medicine.

Dr. Streiff's major clinical interest involves the prevention and treatment of venous thromboembolism. He has written several comprehensive reviews on vena caval filters and the management of venous thromboembolism in cancer patients. He chairs the Venous Thromboembolism Guideline Committee for the National Comprehensive Cancer Center Network and has served on international consensus panels to develop standardized guidelines for the use of vena caval filters in the management of venous thromboembolism. As a member of a Johns Hopkins Evidence-Based Practice Center panel, he participated in the development of evidence reports on the management of venous thromboembolism. His research on patients with malignant gliomas identified ABO blood group as a novel risk factor for VTE in this population. A multicenter clinical trial is now nearing completion to confirm these results and identify plasma markers of increased risk for venous thromboembolism in glioma patients. As Medical Director of the Anticoagulation Management Service and Outpatient Clinics, he and his colleagues from the Department of Pharmacy have been actively involved in developing policies and procedures for standardizing anticoagulation management and guidelines for VTE prevention at the Johns Hopkins Medical Institutions. As the consulting Hematologist for the Johns Hopkins Comprehensive Hemophilia Treatment Center, he is actively involved in the diagnosis and treatment of patients with hemophilia, von Willebrand disease and other hemostatic disorders.