Dr. Max Kates is the R. Christian B. Evensen Professor and an associate professor of urology and oncology at the Brady Urological Institute at Johns Hopkins. He also directs the Division of Urologic Oncology for the Brady Urological Institute. Dr. Kates completed his undergraduate degree at Wesleyan University in Connecticut before pursuing his medical degree at Mount Sinai School of Medicine in New York. He then went on to train at Johns Hopkins for his urologic residency and Society of Urologic Oncology (SUO) fellowship. Dr. Kates has expertise in all areas of urologic oncology, with a particular emphasis on bladder and prostate cancer. With training in open, endoscopic, and robotic surgical approaches, Dr. Kates’ surgical philosophy is to assess the unique needs of each patient, and develop the right treatment plan for their malignancy. He is very hands on in his approach in the clinic and the operating room, and believes open communication with the patient, the patient’s family, and referring providers is key to ensuring a speedy recovery. As the clinical director of the bladder cancer multidisciplinary clinic, Dr. Kates works with the team at the Johns Hopkins Greenberg Bladder Cancer Institute to deliver a personalized approach to bladder cancer utilizing cutting edge precision medicine approaches. Dr. Kates’ research interests involve novel treatments for cancers of the urinary tract. Dr. Kates has authored more than 135 journal articles in the fields of bladder, prostate, and kidney cancer. He currently has a provisional patent for a novel intravesical chemotherapy developed with nano-engineer collaborators. Additionally, Dr. Kates has made important discoveries into the mechanism of action of intravesical BCG, the most common treatment for bladder cancer. He is the principal investigator on multiple trials, and is currently leading EA8212 BRIDGE, which is a randomized trial open in over 150 centers in the United States comparing BCG to GemDoce chemotherapy for early stage bladder cancer. To inquire about an appointment or make a referral, Dr. Kates can be contacted by phone (410) 614-0009. Dr. Kates is rated as an Elite provider by MediFind in Cystectomy. His top areas of expertise are Bladder Cancer, Urothelial Cancer, Muscle Invasive Bladder Cancer, Cystectomy, and Nephrectomy.

Mohummad Siddiqui is an Urologist in Baltimore, Maryland. Dr. Siddiqui is rated as an Experienced provider by MediFind in Cystectomy. His top areas of expertise are Prostate Cancer, Muscle Invasive Bladder Cancer, Bladder Cancer, Vasectomy, and Nephrectomy. Dr. Siddiqui is currently accepting new patients.

Matthew Hyndman is an Urologist in Baltimore, Maryland. Dr. Hyndman is rated as an Experienced provider by MediFind in Cystectomy. His top areas of expertise are Prostate Cancer, Familial Prostate Cancer, Bladder Cancer, Prostatectomy, and Cystectomy.

Dr. Andrew J. Cohen is an Associate Professor of Urology at Johns Hopkins. He serves as the Division Director of Benign Urology and Director of Advanced Practice Providers at the Johns Hopkins Brady Urological Institute. He has a robust clinical practice focusing on complex genitourinary reconstruction. In particular, he has interest in the management of erectile dysfunction, urinary incontinence, stricture diseases of the urinary system, peyronie's disease, genital skin conditions, buried penis, urinary diversion, and other benign urologic conditions. He has extensive experience in robotic surgery. He also focuses on issues pertinent to cancer survivorship in men. He is well equipped to perform novel minimally invasive procedures such as endoscopic urethroplasty and robotic buccal ureteroplasty. He has an extensive research portfolio, with particular concentration in outcomes and safety research. Dr. Cohen received dual B.S. degrees summa cum laude from the University of Florida in Chemistry and Chemical Engineering, followed by an MD from the University of Chicago where he was inducted into the Alpha Omega Alpha Honor Society. His urologic training was pursued at the University of Chicago. Furthermore, he completed a fellowship in Genitourinary Reconstruction and Trauma at the University of California, San Francisco. Among many honors, he was invited to join the Trauma and Urologic Reconstructive Network of Surgeons in 2025. He was a also a recipient of the 'Rising Star' Award from the Society of Genitouinary Reconstructive Surgeons in 2025. Dr. Cohen is rated as an Experienced provider by MediFind in Cystectomy. His top areas of expertise are Urethral Stricture, Hydronephrosis, Obstructive Uropathy, Prostatectomy, and Lithotripsy.

Dr. Marisa Clifton is the Director of Women’s Health at the Brady Urological Institute. She is fellowship trained. As a leader in the field of female urology, her clinical expertise includes surgical and nonsurgical treatment of pelvic organ prolapse, stress urinary incontinence, urgency urinary incontinence, urinary fistulas, genitourinary reconstruction and urethral diverticula. Dr. Clifton is also an Assistant Professor of Urology at the Johns Hopkins School of Medicine and serves as the Director of Robotic Education. In addition, she serves as Vice President of Medical Affairs at Johns Hopkins Bayview Medical Center. She also serves as Associate Chief Medical Officer of The Johns Hopkins Hospital. Her research interests include medical education and clinical outcomes after surgery. Dr. Clifton received her medical degree from the Johns Hopkins University School of Medicine and completed her residency in urology at the Mayo Clinic in Rochester, Minnesota. She completed her fellowship in Female Pelvic Medicine and Reconstructive Surgery at The Cleveland Clinic in Cleveland, Ohio. Dr. Clifton is rated as an Experienced provider by MediFind in Cystectomy. Her top areas of expertise are Urinary Incontinence, Obstructive Uropathy, Neurogenic Bladder, Sacral Nerve Stimulation, and Hormone Replacement Therapy (HRT).

Rian Dickstein is an Urologist in Baltimore, Maryland. Dr. Dickstein is rated as an Advanced provider by MediFind in Cystectomy. 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 an Experienced provider by MediFind in Cystectomy. 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.

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

Dr. Brian Matlaga is a Professor of Urology at Johns Hopkins University School of Medicine and also is the Director of the Stephens Center for Stone Disease as well as the Executive Vice Chair of the James Buchanan Brady Urological Institute. Dr. Matlaga is an internationally recognized expert in the medical and surgical management of patients with urinary stone disease. A frequent contributor to the medical press, with over 180 peer-reviewed publications, Dr. Matlaga’s research has received national and international awards. Dr. Matlaga sits on numerous editorial boards as well as advisory committees and guidelines panels for the American Urological Association, the American Board of Urology, the Endourological Society, and the National Institutes of Health, amongst others. Dr. Matlaga serves as Executive Medical Director of Clinical Affairs for Johns Hopkins Medicine International, the arm of Johns Hopkins Medicine that manages its global presence. In this capacity, he delivers clinical care as well as project leadership across the globe. Dr. Matlaga is rated as an Experienced provider by MediFind in Cystectomy. His top areas of expertise are Kidney Stones, Bladder Stones, Boils, Ureteroscopy, and Lithotripsy.

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 Experienced provider by MediFind in Cystectomy. His top areas of expertise are Prostate Cancer, Kidney Stones, Boils, 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 Cystectomy. His top areas of expertise are Exstrophy of the Bladder, Cloacal Exstrophy, Exstrophy-Epispadias Complex, Osteotomy, and Bladder Reconstruction.

Dr. Victoria Handa is the director of the Department of Gynecology and Obstetrics at Johns Hopkins Bayview Medical Center. She is also a professor in the Johns Hopkins Medicine Department of Gynecology and Obstetrics and director of the Women’s Center for Pelvic Health and Reconstructive Surgery. She holds a joint appointment in the Department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health. Her areas of clinical expertise include pelvic floor disorders and female incontinence. Dr. Handa offers surgical and nonsurgical treatments for pelvic organ prolapse, incontinence and related conditions. Dr. Handa earned her undergraduate degree in civil engineering from Princeton University. She earned her M.D. from the University of Pennsylvania School of Medicine and completed her residency in obstetrics and gynecology at the University of California, San Francisco. She completed a fellowship in urogynecology at the University of California, Irvine, and later earned a Master of Health Science in epidemiology from the Johns Hopkins Bloomberg School of Public Health. Dr. Handa joined the Johns Hopkins faculty in 2001. Prior to joining Johns Hopkins, Dr. Handa was chief of the Division of Gynecology and director of urogynecology at the University of California, Davis. Dedicated to scientific research, Dr. Handa has published numerous peer-reviewed research articles and several book chapters on pelvic floor disorders and urogynecology. Her research is supported by several National Institutes of Health grants and has led to many scientific findings and a 2011 award from the American College of Obstetricians and Gynecologists. Dr. Handa is a member of several scientific societies, including the American Urogynecologic Society and the International Urogynecology Association. She currently serves on the editorial board of Female Pelvic Medicine and Reconstructive Surgery. She is a peer reviewer for numerous medical journals, including the American Journal of Obstetrics and Gynecology, Neurourology and Urodynamics, and the Journal of Female Pelvic Medicine and Reconstructive Surgery. Dr. Handa has been listed in Best Doctors in America since 2005. Dr. Handa is rated as an Experienced provider by MediFind in Cystectomy. Her top areas of expertise are Urinary Incontinence, Uterine Prolapse, Stress Urinary Incontinence, Hysterectomy, and Cystectomy.

Soum Lokeshwar is an Urologist in Owings Mills, Maryland. Dr. Lokeshwar is rated as an Experienced provider by MediFind in Cystectomy. His top areas of expertise are Bladder Cancer, Retrograde Ejaculation, Prostate Cancer, Prostatectomy, and Aquablation.