Dr. Mohamad Allaf is Professor of Urology and Oncology, as well as Director of the Department of Urology and the Brady Urological Institute and Urologist-in-Chief of the Johns Hopkins Hospital. Dr. Allaf is a world renowned surgeon-scientist having performed more than 2,000 robotic procedures and published over 250 peer reviewed research papers in the field's best journals. As one of the busiest robotic radical prostatectomy surgeons in the world, he aims to achieve the best outcomes for his patients. Having trained with Dr. Patrick Walsh, Dr. Allaf has used Dr. Walsh's method of radical prostatectomy as the basis for his own anatomic method to this complex operation. Dr. Allaf is also amongst the leaders in kidney cancer surgery, having served on the American Urological Association Guideline Committee for Kidney Cancer. He led a team who performed the rigorous analysis to help inform the most recent guidelines that was funded by the Agency for Healthcare Research and Quality (AHRQ). He is best known for his ability to save the kidney and remove the tumor in patients with kidney tumors. Dr. Allaf runs a research endeavor aiming to decrease the morbidity associated with the treatment of cancer, and he has mentored numerous leaders in academic urology. He is actively involved in fund raising for research and education, and believes in expanding our base of support in order to advance our important mission. Dr. Allaf is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Renal Cell Carcinoma (RCC), Renal Oncocytoma, Prostate Cancer, Nephrectomy, and Prostatectomy.

Nirmish Singla is an Oncologist in Lutherville, Maryland. Dr. Singla is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Upper Tract Urothelial Carcinoma (UTUC), Renal Cell Carcinoma (RCC), Urothelial Cancer, Nephrectomy, and Orchiectomy.

Ahmed Ghazi is an associate professor of urology at the Johns Hopkins University School of Medicine. He is the Director of Surgical Simulation Training and the Division of Minimally Invasive and Robotic Surgery within the Johns Hopkins Brady Urological Institute. Dr. Ghazi specializes in urologic surgical oncology using the latest techniques of minimally invasive surgery for prostate, kidney, bladder, ureteral and other genitourinary organ cancers. He also as specializes in minimal invasive treatment of complex stones of the urinary tract. Dr. Ghazi is a pioneer in the field of patient-specific surgical simulation, which has applications for training future surgeons as well as improving outcomes for patients through individualized modeling. When planning for a complex surgery, Dr. Ghazi constructs 3D models of the patient’s anatomy in order to plan and rehearse surgery prior to the actual surgery. These models span from digital renderings to tangible models used to practice the critical components of your surgery. Dr. Ghazi received his medical degree from Cairo University in Egypt in 2000, where he also completed his surgery training and urology residency. From there, Dr. Ghazi completed a laparoscopic fellowship in Paris, France in 2008, followed by a second laparoscopic fellowship in Austria in 2009. While practicing in Europe, Dr. Ghazi was accepted to the European Board of Urology. Dr. Ghazi continued his training at the University of Rochester, New York through a two-year fellowship in the robotic treatment of various urologic cancers. He then joined the staff at the urology department of University of Rochester in 2012 where he continued to practice until joining Johns Hopkins Medicine. Dr. Ghazi believes in a reciprocal relationship between innovation, surgery & research where each informs and strengthens the others. He strives to adopt innovative surgical technologies that are evidence-based, benefit his patients and translate directly to improved patient outcomes. Dr. Ghazi is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Prostate Cancer, Kidney Stones, Boils, Prostatectomy, and Nephrectomy.

Dr. Misop Han is David Hall McConnell Professor of Urology and Oncology at the Johns Hopkins School of Medicine. Dr. Han is a urologist whose main clinical focus is in urological oncology with a special emphasis on prostate and kidney cancers. He specializes in robotic nerve-sparing prostatectomy and robotic nephrectomy. Dr. Han received his undergraduate and medical degrees at Johns Hopkins. After an internship in surgery and residency in urology, also at Johns Hopkins, he worked as faculty at Northwestern University and Hospital in Chicago, Illinois. In 2006, he joined the Johns Hopkins faculty. His research interests include the outcome of radical prostatectomy, medical robotics and prediction modeling (what happens to men following surgery for prostate cancer). He has published extensively in these subjects and has received international and national recognition for his research. He is actively involved in several clinical research projects with the database of more than 20,000 men who received surgery for prostate cancer at The Johns Hopkins Hospital. He is a member of the American Urological Association and the American Medical Association. Dr. Han is rated as a Distinguished provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Prostate Cancer, Ureterocele, Familial Prostate Cancer, Prostatectomy, and Nephrectomy.

Arvin K. George, MD, is a urologic surgeon specializing in the diagnosis and management of genitourinary cancers, with particular sub-specialization in kidney and prostate cancers. His clinical interests and expertise are in image-guided therapeutics, and minimally-invasive ablative/surgical techniques for prostate and kidney cancer. These include laparoscopic and robotic surgery, in addition to cryoablation, high-intensity focused ultrasound ablation, nanoparticle directed laser ablation, laser interstitial thermal therapy, and bipolar radiofrequency ablation. Dr. George obtained his medical degree from the Royal College of Surgeons in Ireland, followed by a urology residency at the Smith Institute for Urology, Hofstra North Shore-LIJ School of Medicine. He remained to complete his endourology/minimally-invasive and robotic surgery fellowship in New York gaining additional subspecialty expertise in robotic, laparoscopic, and percutaneous surgery. Subsequently, he completed a urologic oncology fellowship at the National Cancer Institute, National Institutes of Health. He then joined the clinical facility at the University of Michigan, Ann Arbor, where he directed the Prostate Cancer Programs from 2019 through 2023. Dr. George participates extensively in the discovery of urologic science and evaluation of urologic care and has co-authored over 80 peer reviewed publications. Additionally, he has authored 11 chapters in medical education books. Dr. George sees patients in clinic throughout the Baltimore region and also is available for virtual appointments for patients in Maryland, Washington D.C., New York and Michigan. Dr. George is rated as an Experienced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Prostate Cancer, Renal Cell Carcinoma (RCC), Familial Prostate Cancer, Prostatectomy, and Nephrectomy.

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 rated as an Experienced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Exstrophy of the Bladder, Cloacal Exstrophy, Exstrophy-Epispadias Complex, Osteotomy, and Bladder Reconstruction.

Naren Nimmagadda, M.D., is an assistant professor of urology at the Johns Hopkins University School of Medicine. He treats a wide range of benign and malignant urological conditions. As a fellowship trained urologist in endourologic and laparoscopic surgery, his practice focuses on treated voiding issues related to BPH through Holmium Laser Enucleation of the Prostate (HoLEP), an alternative to transurethral resection of the prostate (TURP). Dr. Nimmagadda also specializes in treating kidney, ureteral and bladder stones via shockwave lithotripsy, endoscopic and percutaneous techniques. Dr. Nimmagadda is the Endourology, Minimally Invasive Urology Fellowship Program Director. Dr. Nimmagadda attended medical school at the University of Maryland School of Medicine. Following medical school, Dr. Nimmagadda completed a general surgery internship and residency in urology at Massachusetts General Hospital. He then completed a fellowship in endourology and laparoscopic surgery at Vanderbilt University Medical Center. Following graduation, Dr. Nimmagadda served on the Vanderbilt University Medical Center’s Department of Urology faculty as an instructor. Dr. Nimmagadda has research interest in the intersection of urology and technological innovation. Dr. Nimmagadda is rated as an Experienced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Kidney Stones, Enlarged Prostate (BPH), UPJ Obstruction, Ureteroscopy, and Lithotripsy.

Arun Rai, M.D., M.B.A., M.S., is a urologist who specializes in minimally invasive surgery and endourology and has extensive training to treat patients with adrenal cancer, kidney cancer, ureteral cancer and prostate cancer. In addition, he also specializes in treating patients with BPH, kidney stones and bladder stones. Dr. Rai earned both his undergraduate and medical degrees through the highly selective seven-year accelerated medical education program at Boston University School of Medicine. Dr. Rai went on to complete a general surgery internship at Baylor College of Medicine, where he then also completed his urology residency. Dr. Rai continued his training at the Northwell Health’s Smith Institute for Urology by completing a fellowship in Endourology and Minimally Invasive Surgery. During this time, he also received a dual MBA/MS in Healthcare Leadership Weill Cornell Graduate School of Medical Sciences and Cornell University. In addition to caring for patients, Dr. Rai serves as Clinical Director for the Brady Urological Institute's Quantitative Data Sciences division. His research focuses on developing the next generation of surgical technology, focusing on artificial intelligence and machine learning for optimizing clinical care. He strongly believes that surgeons should have an active role in the development of the next generation of tools for the optimal treatment of patients. He has authored several publications, with topics including patient safety in the operating room, long-term outcomes of subcapsular renal hematoma, pelvi-ureteric junction obstruction and featured in journals such as Urology and the Journal of Endourology. Dr. Rai is rated as an Experienced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Kidney Stones, Horseshoe Kidney, Boils, Ureteroscopy, and Lithotripsy.

Dr. Elliot K. Fishman is a Professor in the Johns Hopkins Medicine Department Radiology and Radiological Science, Department of Oncology and Department of Surgery. He serves as a member of the Johns Hopkins Kimmel Cancer Center. His clinical and research interests focus on medical imaging with specific emphasis on three-dimensional (3D) imaging and computed tomography (CT). Dr. Fishman received his B.S. in 1973 and M.D. in 1977 from the University of Maryland. After a residency at Sinai Hospital in Baltimore, he completed a fellowship in CT at Johns Hopkins in 1980 and joined the Johns Hopkins faculty in 1981 as an Assistant Professor. In 1986, he became Associate Professor and, in 1991, Professor of Radiology and Oncology. He is a leader in the development of 3D imaging and rendering, including its impacts on and uses in patient care and management. He was involved from the beginning in the development of 3D imaging through his work with Pixar, which was a spin-off from LucasFilms in San Rafael, California. Over the last 25 years, Dr. Fishman continued to help develop 3D imaging and has been a leader in the development of interactive 3D rendering. His team is consistently at the forefront of research and development of new visualization and post-processing techniques and technologies. Dr. Fishman's extensive body of work in CT has resulted in over 1,000 peer-reviewed publications, and he is the author or co-author of 10 textbooks. He is the recipient of three prestigious Aunt Minnie Awards, honoring his outstanding contributions as both an educator and researcher. In 2007, he was named by Medical Imaging Magazine as the Top Radiologist in the Nation. He is a member of editorial boards for more than 35 journals, an active member of several professional radiology associations and is a past-president of the Society of Body CT/MR. Dr. Fishman is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Neuroendocrine Tumor, Pancreatic Ductal Adenocarcinoma, Cavernous Lymphangioma, Pancreaticoduodenectomy, and Pancreatectomy.

Sunil H. Patel, M.D., M.A., is an Assistant Professor of Urology and Oncology at the School of Medicine at Johns Hopkins. He serves as and the Director of the Urologic Oncology Fellowship. He also serves as Director of the Testicular Cancer program. He treats all urologic malignancies, including adrenal cancer, kidney cancer, urothelial cancer, bladder cancer, prostate cancer, testes cancer, and penile cancers. Additionally, he has advanced training in complex robotic and open surgical cases. His clinical and research focus is in Urologic Oncology, with areas of focus in bladder cancer, testes cancer, and kidney cancer. Dr. Patel completed his undergraduate studies at California Polytechnic State University, San Luis Obispo where he studied Biological Sciences. He completed his Masters at Boston University, completing his thesis on microfluidics, afterwards completing his medical degree at Boston University. He completed his general surgery internship and urology residency at University of California, San Diego. He continued his training through a Society of Urologic Oncology Fellowship in urologic oncology at the Johns Hopkins Hospital. He joined Johns Hopkins in June 2020 with interests in environmental factors contributing to oncogenesis in urological cancers, especially bladder cancer. He is dedicated to international health and works closely with international volunteers in urology and has done several mission trips and guest lectures. Dr. Patel is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Bladder Cancer, Muscle Invasive Bladder Cancer, Non-Muscle Invasive Bladder Cancer, Nephrectomy, and Reconstructive Urology Surgery.

Dr. Christian Pavlovich is Bernard L. Schwartz Distinguished Professor in Urologic Oncology at the Johns Hopkins University School of Medicine and Director of the Prostate Cancer Active Surveillance Program at the Brady Urological Institute. Dr. Pavlovich treats cancer with an emphasis on minimizing morbidity and maximizing quality of life while offering patients the latest treatment options and techniques. His clinical focus is on prostate and kidney cancer, and on clinical trials regarding detection, surveillance, and immunotherapy. With more than 20 years of experience with minimally-invasive surgery for the treatment of urologic cancers, he is expert in robotic surgery and was named one of the top prostate cancer surgeons in the United States by Newsweek in 2024. In addition, he offers patients modern diagnostic biopsy techniques, and for prostate cancer patients active surveillance and ablative options including cryotherapy and TULSA. Dr. Pavlovich grew up in Washington DC, went to Harvard University, and then earned his medical degree at the University of California, San Francisco (UCSF) School of Medicine. He then completed a urology residency at New York Hospital-Cornell Medical Center and a National Cancer Institute SUO fellowship in urologic oncology before joining the Hopkins faculty in 2001. Dr. Pavlovich has published over 150 peer-reviewed articles, is Associate Editor of The Prostate and is on the Editorial Board of the British Journal of Urology International. He was the inaugural Director of the Brady Urological Institute’s SUO Urologic Oncology Fellowship (2014 -2024) and is the recipient of three “best teaching/research mentor” awards from the Urology residents at Johns Hopkins. Dr. Pavlovich speaks English, French, Spanish, German, and Serbo-Croatian. He enjoys spending time with his wife and children, following their pursuits, and skiing, diving, running, wildlife, and the great outdoors. Dr. Pavlovich is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Prostate Cancer, Familial Prostate Cancer, Renal Cell Carcinoma (RCC), Prostatectomy, and Nephrectomy.

Dr. Kelvin K. Hong is an Associate Professor and Executive Vice Chair of Radiology within the Johns Hopkins Department of Radiology. A specialist in interventional and vascular radiology, Dr. Hong serves as the Medical Director of the Johns Hopkins Interventional Radiology Center. Dr. Hong earned his medical degree from South Africa’s University Of Witwatersrand Medical School in Parktown. He completed a radiology residency at Parktown West’s College of Medicine/Radiology, as well as a cardiovascular/interventional radiology fellowship and diagnostic radiology residency at The Johns Hopkins Hospital. His areas of clinical expertise include bone, liver and soft-tissue tumors; chronic total occlusions; claudication; deep venous thrombosis; lung, esophageal and kidney cancer; peripheral arterial/vascular disease; renal artery/vascular disease; uterine fibroid tumors; varicocele; and vascular malformations and venous thromboembolism. Dr. Hong performs procedures that include radiofrequency ablation for lung, liver, kidney and bone lesions; transcatheter arterial chemoembolization for liver cancer; lower-extremity angioplasty and stenting; visceral angioplasty and stenting; embolization of uterine fibroid tumors; cryoablation for pain control; and percutaneous laser ablation of varicose veins. Dr. Hong served as editor for the book Percutaneous Tumor Ablation and contributed to Interventional Oncology: Principles and Practice. Dr. Hong is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Fibrolamellar Carcinoma, Bile Duct Obstruction, Neuroendocrine Tumor, Liver Embolization, and Pancreaticoduodenectomy.

Christen Alevizatos is an Urologist in Baltimore, Maryland. Dr. Alevizatos is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Prostate Cancer, Familial Prostate Cancer, Urinary Tract Infection in Children, Ureteroscopy, and Prostatectomy. Dr. Alevizatos is currently accepting new patients.

Vikrant Uberoi is an Urologist in Baltimore, Maryland. Dr. Uberoi is rated as an Advanced provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Urinary Tract Infection (UTI), Enlarged Prostate (BPH), Urinary Tract Infection in Children, Ureteroscopy, and Bladder Reconstruction. Dr. Uberoi is currently accepting new patients.

Rian Dickstein is an Urologist in Baltimore, Maryland. Dr. Dickstein is rated as a Distinguished provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Bladder Cancer, Non-Muscle Invasive Bladder Cancer, Hydronephrosis, Ureteroscopy, and Nephrectomy. Dr. Dickstein is currently accepting new patients.

Mark Shimko is an Urologist in Baltimore, Maryland. Dr. Shimko is rated as a Distinguished provider by MediFind in the treatment of Ureterocele. His top areas of expertise are Prostate Cancer, Familial Prostate Cancer, UPJ Obstruction, Nephrectomy, and Reconstructive Urology Surgery. Dr. Shimko is currently accepting new patients.

Dr. Satomi Kawamoto is an Associate Professor in the Johns Hopkins Medicine Department of Radiology and Radiological Science. She specializes in computed tomography (CT), ultrasound, and image-guided biopsy. Dr. Kawamoto received her M.D. from Gunma University in Gunma, Japan, and subsequently completed two residencies, one in internal medicine at St. Luke’s International Hospital in Tokyo, and a second in diagnostic radiology at Johns Hopkins. She received a postdoctoral fellowship in cross-sectional imaging at Johns Hopkins, and then joined the Johns Hopkins faculty. Dr. Kawamoto’s research focuses on body CT and biopsy, particularly imaging of the genitourinary and gastrointestinal systems. Dr. Kawamoto is rated as an Experienced provider by MediFind in the treatment of Ureterocele. Her top areas of expertise are Neuroendocrine Tumor, Muscle Invasive Bladder Cancer, Cavernous Lymphangioma, Hepato-Pancreato-Biliary Surgery, and Pancreaticoduodenectomy.

"Dr. Katarzyna J. Macura is a professor in the Johns Hopkins Medicine department of radiology and radiological science, a professor of oncology and urology at the Johns Hopkins University School of Medicine, and a member of the Johns Hopkins Kimmel Cancer Center and the Johns Hopkins Precision Medicine Center of Excellence for Prostate Cancer. She is a radiologist consultant for the Prostate Cancer Multidisciplinary Clinic at The Johns Hopkins Hospital in Baltimore, MD. Dr. Macura established a clinical and research prostate imaging program with a focus on magnetic resonance imaging (MRI). Dr. Macura has expertise in cross-sectional body imaging, MRI and prostate cancer, and image-guided biopsies. Dr. Macura earned her medical degree from the Medical University of Lodz in Poland. She completed a residency in diagnostic radiology at the Medical College of Georgia and a fellowship in cross-sectional body imaging at Johns Hopkins University. Prior to arrival at Hopkins in 2000, Dr. Macura completed post-doctoral research in Artificial Intelligence at the University of Georgia in Athens, GA. With a PhD degree in Medical Informatics, she had pioneered early applications of Artificial Intelligence for medical decision support, a domain that is now rapidly expanding owing to the advancement of computer technologies and recent recognition that decision support augments appropriate utilization of medical technologies, provides second opinion systems for improved diagnostics and management, and allows optimization of medical care delivery with the assessment of quality and safety. Dr. Macura is a certified knowledge engineer. Dr. Macura is a member of several national and international radiology organizations. She served as president of the Maryland Radiological Society, the Maryland Chapter of the American College of Radiology (ACR), between 2013 and 2015, as well as president of the American Association for Women in Radiology (AAWR) in 2005. She was a Chancellor on the ACR Board of Chancellors, serving as the Inaugural Chair of the ACR Commission for Women and Diversity, between 2013 and 2019. She served as Vice-President of the ACR 2019-2020. She was named the Outstanding Teacher of the Year by Hopkins Radiology Residents in 2005 and 2021, and received the Resident Mentoring Awards in 2018 and 2024. Dr. Macura was also named the Honored Educator by the Radiological Society of North America in 2012 and 2014. In 2016, she received the ""Diamond"" Jim Brady Urology Residents teaching award and the AAWR Marie Sklodowska-Curie award. In 2022, she received the Gold Medal from the American College of Radiology. Dr. Macura is a Fellow of the American College of Radiology (FACR), the Society for Advanced Body Imaging (FSABI), and the American Association for Women in Radiology (FAAWR).". Dr. Macura is rated as an Experienced provider by MediFind in the treatment of Ureterocele. Her top areas of expertise are Muscle Invasive Bladder Cancer, Fibrolamellar Carcinoma, Renal Cell Carcinoma (RCC), Prostatectomy, and Penectomy.

Dr. Ulrike M. Hamper is a Professor in the Johns Hopkins Medicine Department of Radiology and Radiological Science. She also holds appointments in the Department of Pathology and Department of Urology. Her clinical interests include image-guided interventional procedures and encompass the entire spectrum of sonographic studies. These include vascular, OB/GYN, abdominal, genitourinary, pediatric and musculoskeletal ultrasound, as well as imaging of the thyroid, neck and scrotum. Dr. Hamper earned her medical degree at Germany’s Thesis University of Bonn. She completed a pathology residency at the University of Cologne and a rotating medical/surgical internship at Bonn’s Malteser Hospital—both also in Germany. At The Johns Hopkins Hospital, Dr. Hamper completed a residency in diagnostic radiology and fellowship in ultrasound, computed tomography, nuclear medicine and cardiovascular radiology. She also holds a Master of Science in Business degree and an M.B.A. in medical services management, both from Johns Hopkins University. Dr. Hamper has published scores of articles, conducted approximately 20 funded research studies and presented nearly 100 invited lectures. Dr. Hamper is rated as an Experienced provider by MediFind in the treatment of Ureterocele. Her top areas of expertise are Melorheostosis with Osteopoikilosis, Melorheostosis, Osteopenia, and Premature Ovarian Failure.

Pamela Johnson is a Radiologist in Baltimore, Maryland. Dr. Johnson is rated as an Experienced provider by MediFind in the treatment of Ureterocele. Her top areas of expertise are Ampullary Cancer, Liposarcoma, Ureterocele, and Fibrosarcoma.