Dr. Yifan M. Griffin

Dr. Corbyons specializes in pediatric urology in the Johns Hopkins All Children’s Hospital Department of Surgey. She earned her medical degree from the University of Florida College of Medicine, where she also completed her internship and residency. Dr. Corbyons then completed a fellowship at Cincinnati Children’s Hospital Medical Center. Dr. Corbyons is rated as an Advanced provider by MediFind in the treatment of Imperforate Anus. Her top areas of expertise are Undescended Testicle, Testicular Torsion, Hypospadias, and Posterior Urethral Valves.

Dr. Ballesteros specializes in pediatric urology in the Johns Hopkins All Children’s Hospital Department of Surgery. She earned her medical degree from Meharry Medical College in Nashville, Tennessee. She completed an internship in general surgery and a residency in urology from the University of Louisville. Dr. Ballesteros then completed a pediatric urology fellowship from Nicklaus Children’s Hospital in Miami. She also has a certification of fellowship in da Vinci® Surgery in pediatric urology. Dr. Ballesteros is rated as an Advanced provider by MediFind in the treatment of Imperforate Anus. Her top areas of expertise are Testicular Torsion, Undescended Testicle, Hydrocele, Hypospadias, and Orchiectomy.

Dr. Polsky specializes in pediatric urology in the Johns Hopkins All Children’s Hospital Department of Surgery. He earned his medical degree from the University of Kentucky College of Medicine, where he also completed his internship and residency. Dr. Polsky then completed a fellowship in pediatric urology at Children’s Hospital of Pittsburgh, University of Pittsburgh Medical Center. Additionally, Dr. Polsky is a clinical associate professor of urology and pediatrics for the University of South Florida. Dr. Polsky is rated as an Advanced provider by MediFind in the treatment of Imperforate Anus. His top areas of expertise are Testicular Torsion, Undescended Testicle, Hypospadias, Hydrocele, and Orchiectomy.