Dr. Mahmoud Mustafa

Ozlem Goker is a primary care provider, practicing in Pediatrics in Fairfax, Virginia. Dr. Goker is highly rated in 15 conditions, according to our data. Her clinical expertise encompasses Gaucher Disease, Fabry Disease, Gaucher Disease Type 1, and Pompe Disease.

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.” Videos Chad Crigger, M.D.Pediatric Urologist. Dr. Crigger is highly rated in 12 conditions, according to our data. His clinical expertise encompasses Cloacal Exstrophy, Exstrophy of the Bladder, Epispadias, Osteotomy, and Bladder Reconstruction.

Michael Hsieh, MD, PhD, is a urologist at Children's National Hospital. Dr. Hsieh has experience in laparoscopic and robotic surgery for urologic conditions and specializes in bladder diseases affecting children and young adults. He is board-certified in urology and holds the certificate of added qualification in pediatric urology. Dr. Hsieh was recruited to Children’s National and the George Washington University to serve as Director of Transitional Urology. This joint venture is the East Coast's first clinical program dedicated to the care of adolescents and young adults with congenital urologic disorders. Many of these patients have chronic cystitis and are at increased risk of bladder cancer, diseases which dovetail with Dr. Hsieh’s research interests. Dr. Hsieh also is the Director of Research for the Division of Urology and the Associate Director for Science at the Sheik Zayed Institute for Pediatric Surgical Innovation. He runs an NIH-funded bladder biology research group. Dr. Hsieh has been a Recognized Doctor on the Healthgrades Honor Roll and Best Doctors in America. He has been featured several times in the New York Times for his work in robotic surgery and bladder inflammation. He attended Stanford University and returned to the East Coast for medical school at Thomas Jefferson University. During medical school, Dr. Hsieh also obtained a PhD in immunology and afterwards began exploring what would eventually become his long-term interest – the role of bladder inflammation in urinary tract infections and development of bladder cancer. He completed his urology residency training at the University of California San Francisco and pediatric urology fellowship training at Texas Children’s Hospital. As a pediatric urology fellow, Dr. Hsieh began studying how the commensal microbiome (the collection of naturally occurring, non-pathogenic bacteria in and on our bodies) may prevent urinary tract infections. Following fellowship training, he was an Assistant Professor at Stanford University, where he founded an NIH-funded research group focused on bladder inflammation, urinary tract infections and bladder cancer. Dr. Hsieh was the Administrative Director for Stanford’s Children’s Hospital Prenatal Urology and Minimally Invasive Surgery Programs. Publications Google Scholar|ORCiD. Dr. Hsieh is highly rated in 9 conditions, according to our data. His clinical expertise encompasses Urinary Tract Infection (UTI), Undescended Testicle, Asymptomatic Bacteriuria, Trabeculectomy, and Endoscopy. Dr. Hsieh is board certified in Pediatric Urology: American Board Of Urology, 2012 and Urology: American Board Of Urology, 2012.