Dr. Joel L. Marmar

Kathleen Hwang is an Urologist in Philadelphia, Pennsylvania. Dr. Hwang is rated as an Advanced provider by MediFind in Vasectomy. Her top areas of expertise are Sertoli Cell-Only Syndrome, Spermatogenesis Arrest, Peyronie Disease, Vasectomy, and Hormone Replacement Therapy (HRT). Dr. Hwang is currently accepting new patients.

Gregg Zimmerman is an Urologist in East Brunswick, New Jersey. Dr. Zimmerman is rated as a Distinguished provider by MediFind in Vasectomy. His top areas of expertise are Congenital Mesoblastic Nephroma, Enlarged Prostate (BPH), Perirenal Abscess, Vasectomy, and Reconstructive Urology Surgery. Dr. Zimmerman is currently accepting new patients.

Russell Hayden, M.D., is a urologist with a sub-specialty in male infertility and microsurgery. It was during his graduate studies in biomedical engineering at Johns Hopkins University where Dr. Hayden’s drive to work in an impactful field of medicine where technology, precision, and creative problem solving align manifested. Dr. Hayden then earned his medical degree from Harvard University. He remained in Massachusetts to pursue his residencies in general surgery and urology from Massachusetts General Hospital in Boston. Dr. Hayden then completed his fellowship in reproductive medicine and microsurgery at Weill Cornell Medicine in New York. Coming from a family of tradesmen, Dr. Hayden takes pride in the levels of problem-solving urology requires, including the intricate and skill-heavy type of microsurgery that requires manipulation of tissue at magnifications as high as 25-fold, often with sutures finer than a human hair. Dr. Hayden is a member of the American Urological Association, the American Society for Reproductive Medicine, the Society for Male Reproduction and Urology, the Society for the Study of Male Reproduction, and the New York Academy of Sciences. He has published papers, written chapters, and presented several topics, including vestibular prostheses, azoospermia, metastatic prostate cancer, and more. Dr. Hayden joined Shady Grove Fertility’s Center for Male Fertility in 2021, and currently sees patients at the Chesterbrook, PA and Towson, MD, offices, as well as additional SGF Pennsylvania locations. Originally trained as an electrical engineer, Dr. Hayden enjoys making small robots and other toys with his two sons in his garage in his spare time as well as spending family time outdoors. Dr. Hayden is rated as a Distinguished provider by MediFind in Vasectomy. His top areas of expertise are Sertoli Cell-Only Syndrome, Infertility, Klinefelter Syndrome, Vasectomy, and Ureteroscopy.