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 a Distinguished provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Kidney Stones, Bladder Stones, Boils, Ureteroscopy, and Lithotripsy.

Dr. Heather Noelle Di Carlo is an associate professor of urology at the Johns Hopkins University School of Medicine. She treats all pediatric urological disorders in young males and females while specializing in renal sparing surgery and complex reconstruction of the genitourinary tract in patients with the exstrophy-epispadias complex, disorders of sexual development (DSD) and other congenital anomalies. She serves as the Director of Pediatric Urology Research and is the interim Division Director of Pediatric Urology. A native of New York, Dr. Di Carlo graduated from Emory University with a B.S. in neuroscience and music, and the State University of New York at Stony Brook School of Medicine. Following general surgery and urology residency training at Stony Brook Medical Center, she completed a pediatric urology fellowship at the James Buchanan Brady Urological Institute. Dr. Di Carlo has special clinical and basic science interests in the exstrophy-epispadias complex, spina bifida and renal transplantation. Dr. Di Carlo is rated as a Distinguished provider by MediFind in the treatment of Bladder Stones. Her top areas of expertise are Exstrophy of the Bladder, Exstrophy-Epispadias Complex, Cloacal Exstrophy, Bladder Reconstruction, and Osteotomy.

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 a Distinguished provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Exstrophy of the Bladder, Cloacal Exstrophy, Exstrophy-Epispadias Complex, Osteotomy, and Bladder Reconstruction.

Jonathan Rhee is an Urologist in Silver Spring, Maryland. Dr. Rhee is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are UPJ Obstruction, Bilateral Hydronephrosis, Hydronephrosis, Ureteroscopy, and Prostatectomy. Dr. Rhee is currently accepting new patients.

Peter Filderman is an Urologist in Baltimore, Maryland. Dr. Filderman is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Enlarged Prostate (BPH), UPJ Obstruction, Urinary Tract Infection in Children, Ureteroscopy, and Bladder Reconstruction.

Alejandro Rodriguez is an Urologist in Columbia, Maryland. Dr. Rodriguez is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Enlarged Prostate (BPH), UPJ Obstruction, Kidney Stones, Familial Prostate Cancer, and Ureteroscopy.

Dr. John P. Gearhart is a professor of pediatrics and urology at the Johns Hopkins School of Medicine. His clinical and surgical interests focus on the evaluation and treatment of children born with major congenital birth defects, bladder exstrophy, disorders of sexual development and childhood urinary cancers. Dr. Gearhart received his M.D. from the University of Louisville School of Medicine in 1975. After an internship in surgery and residencies in surgery and urology at the Medical College of Georgia, he completed a fellowship in pediatric urology at Alder Hey Children's Hospital of the University of Liverpool School of Medicine in 1981. Following two years as a urologist at St. Mary's Hospital in Huntington, West Virginia, he completed a second fellowship in pediatric urology at Johns Hopkins in 1985 and joined the Johns Hopkins faculty thereafter as an associate professor of pediatric urology. Over the course of his distinguished career, Dr. Gearhart has been lauded as a pioneer in pediatric urology and reconstructive genitourinary surgery. He has published extensively and has received numerous awards and guest lectureships. He is a member of several national and international professional organizations and is a founding member of the Society of Reconstructive Genitourinary Surgeons. Dr. Gearhart is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Cloacal Exstrophy, Exstrophy of the Bladder, Exstrophy-Epispadias Complex, Osteotomy, and Bladder Reconstruction.

Frank Nezu is an Urologist in Columbia, Maryland. Dr. Nezu is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Enlarged Prostate (BPH), Perirenal Abscess, Carbuncle, Boils, and Ureteroscopy.

David Fenig is an Urologist in Columbia, Maryland. Dr. Fenig is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Male Pseudohermaphroditism with Gynecomastia, Eunuchoidism Familial Hypogonadotropic, Testicular Failure, Hypogonadism Primary Partial Alopecia, and Ureteroscopy.

Dr. Edward Wright is an associate professor of urology at the Johns Hopkins School of Medicine. He serves as the Director of Urology at the Johns Hopkins Bayview Medical Center. His clinical and research interests are in male and female urinary incontinence, complex voiding dysfunction and pelvic genitourinary reconstructive surgery. His specialty has less to do with surgical removal and more with mending urological body parts and restoring functionality in them. His passion for Johns Hopkins lies in the fact that it is the type of place where things can be done, and patients’ questions can be answered and solutions to their problems can be found through all of the resources Johns Hopkins has to offer. Dr. Wright earned his M.D. from Dartmouth Medical School in New Hampshire. He completed his residency in urology at The Presbyterian Hospital in the City of New York and performed a fellowship in Urogynecology at Duke University School of Medicine. Dr. Wright is a member of the American Urologic Association and the Mid-Atlantic Section of American Urologic Association as well as the Society for Urodynamics and Female Urology. He has been recognized with a number of awards including Winner of the Urology Chief Resident's debate New York section of the American Urologic Society at the The New York Academy of Medicine. Dr. Wright is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Neurogenic Bladder, Stress Urinary Incontinence, Urinary Incontinence, Ureteroscopy, and Bladder Reconstruction.

Robert Goldfarb is an Urologist in Columbia, Maryland. Dr. Goldfarb is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Urethral Stricture, Peyronie Disease, Obstructive Uropathy, Ureteroscopy, and Reconstructive Urology Surgery.

Kasey Morrison is an Urologist in Silver Spring, Maryland. Dr. Morrison has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Neurogenic Bladder, Bilateral Hydronephrosis, Hydronephrosis, Ureteroscopy, and Prostatectomy. Dr. Morrison is currently accepting new patients.

David Mcdermott is an Urologist and a General Surgeon in Bowie, Maryland. Dr. Mcdermott is rated as a Distinguished provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Congenital Mesoblastic Nephroma, Urothelial Cancer, Non-Muscle Invasive Bladder Cancer, Nephrectomy, and Reconstructive Urology Surgery. Dr. Mcdermott is currently accepting new patients.

Dr. Litvak received his undergraduate degree with distinction from the University of Michigan. He received his medical degree from the University of Maryland School of Medicine where he was honored with the Bradley A. Gaither Award for Excellence in Genitourinary Surgery. Dr. Litvak completed his residency in urological surgery at the Boston University School of Medicine where he served as chief resident. In 2005, Dr. Litvak joined Urological Consultants. Shortly thereafter he initiated the laparoscopic urology program at Suburban Hospital where he performed the first laparoscopic nephrectomy. In 2008, he and Dr. Radolinski initiated the Robotic Surgery program at Suburban Hospital. Dr. Litvak has published numerous journal articles and meeting abstracts on a wide array of urological topics. He has also authored several chapters in textbooks of urological surgery. He has taught courses in minimally invasive surgery both domestically and abroad. Dr. Litvak is honored to be recognized by his peers as one of the areas top urologists by receiving the Washingtonian Magazine’s Top Doctors Award. Dr. Litvak is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Enlarged Prostate (BPH), Congenital Mesoblastic Nephroma, Obstructive Uropathy, Reconstructive Urology Surgery, and Nephrectomy.

Dr. Rosenblum is originally from Mexico City. He received his medical degree from the Anahuac University where he graduated at the top of his class. He then competed for and was awarded a urology residency position at the prestigious National Institute of Medical Sciences in Mexico. He subsequently accepted a fellowship position in urologic oncology at the University of Colorado Health Sciences Center in Denver, where he was involved in multiple research projects relating to urologic cancers–in particular, prostate cancer treatments and prostate cancer chemoprevention. Upon completing his fellowship, Dr. Rosenblum emigrated to the United States and became board eligible by completing his second urology residency at the Washington Hospital Center in Washington, D.C. He is a diplomate of the American Board of Urology. Dr. Rosenblum has been in private practice since 2005. He also volunteers as a consultant for the Montgomery County Cancer Crusade. He has a diverse urologic practice with particular interests in minimally invasive surgery for urologic cancers. Dr. Rosenblum has published multiple journal articles and meeting abstracts, and he has been an invited lecturer both here and abroad. He has received multiple awards and distinctions along the course of his career. Dr. Rosenblum is a member of the American Urological Associationand a Fellow of the American College of Surgeons. When he is not caring for patients, Dr. Rosenblum enjoys spending time with his wife, two small daughters, and his dog, Lucas. Dr. Rosenblum is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Enlarged Prostate (BPH), Prostate Cancer, Familial Prostate Cancer, Ureteroscopy, and Nephrectomy.

David Osborn is an Urologist and an Obstetrics and Gynecologist in Bethesda, Maryland. Dr. Osborn is rated as an Advanced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Urinary Incontinence, Enlarged Prostate (BPH), Retrograde Ejaculation, Ureteroscopy, and Sacral Nerve Stimulation.

Dr. Kathleen Sterling is part of the Suburban Hospital’s medical staff and a urologist with Urological Consultants, P.A. Dr. Sterling served as chief resident of the University of Maryland Medical Center urology program. During her training, she performed laboratory research related to overactive bladder. With an undergraduate degree from Vanderbilt University, Dr. Sterling served as a Surface Warfare Officer in the United States Navy, completing two deployments at sea, including one combat mission during Operation Iraqi Freedom. Dr. Sterling treats both men and women. Her expertise includes voiding dysfunction, male and female urinary incontinence and female pelvic floor disorders. Dr. Sterling’s practice also encompasses medical and surgical management of kidney stones, erectile dysfunction and urological cancers. Dr. Sterling sees patients in Bethesda and Germantown, Maryland. For appointments, call 301-530-1700. Dr. Sterling is rated as an Experienced provider by MediFind in the treatment of Bladder Stones. Her top areas of expertise are Urinary Tract Infection in Children, Urinary Tract Infection (UTI), Urinary Incontinence, Kidney Stones, and Ureteroscopy.

Kenneth Langer is an Urologist in Baltimore, Maryland. Dr. Langer is rated as an Experienced provider by MediFind in the treatment of Bladder Stones. His top areas of expertise are Enlarged Prostate (BPH), Urinary Incontinence, Frequent or Urgent Urination, Urinary Tract Infection in Children, and Ureteroscopy.

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 the treatment of Bladder Stones. His top areas of expertise are Urethral Stricture, Hydronephrosis, Obstructive Uropathy, Prostatectomy, and Lithotripsy.

Katherine Smentkowski is a Plastic Surgeon and an Urologist in Columbia, Maryland. Dr. Smentkowski is rated as an Experienced provider by MediFind in the treatment of Bladder Stones. Her top areas of expertise are Ureterocele, Urinary Tract Infection in Children, Urinary Tract Infection (UTI), Reconstructive Urology Surgery, and Ureteroscopy.