As a pediatric nephrologist, Joshua Zaritsky, MD, PhD, cares for children with kidney and urinary tract conditions. He specializes in treating rare renal diseases, such as x-linked hypophosphatemia (XLH), hypophosphatasia (HPP), focal segmental glomerulosclerosis (FSGS), cystinosis, cystinuria and Bardet-Biedl syndrome (BBS) at Phoenix Children's. Previously, Dr. Zaritsky developed the apheresis and lipid apheresis programs at Nemours Children's Hospital, Delaware and St. Christopher's Hospital for Children in Philadelphia.

Dr. Zaritsky loves children's energy, making pediatrics an obvious choice in medical school. The opportunity to make a difference in the world while working with a great team of doctors led Dr. Zaritsky to Phoenix Children's.

Dr. Zaritsky earned his medical and doctoral research degrees at Stanford University School of Medicine in Stanford, California. He completed a pediatric internship and residency at Denver Children's Hospital and a pediatric nephrology fellowship at the University of California, Los Angeles School of Medicine. He is certified in pediatrics and pediatric nephrology by the American Board of Pediatrics.

Dr. Zaritsky is a member of numerous professional organizations, including the American Society of Pediatric Nephrology, the International Pediatric Nephrology Association, and the Society for Pediatric Research. He is also a member and a fellow of the American Society of Nephrology and the National Kidney Association. In addition, he has been listed among "Top Doctors" by Delaware Today magazine in 2016-2017, South Jersey Magazine in 2018 and Philadelphia magazine in 2017-2020.

Dr. Zaritsky has also been active in teaching the next generation of providers at Drexel University College of Medicine in Philadelphia, Florida State University College of Medicine in Tallahassee, Thomas Jefferson University's Sidney Kimmel Medical College in Philadelphia and the David Geffen School of Medicine at the University of California, Los Angeles.

Understanding the importance of research to find new treatments and cures, Dr. Zaritsky has participated in clinical studies in iron metabolism and published in numerous professional journals.

The opportunity to help families motivates Dr. Zaritsky. As a parent himself, he understands how stressful it can be to have a sick child. He knows optimism and a smile go a long way in helping families deal with tough situations. He is focused on reassuring children and families that he is here for them and will do his best to help them.

When he is not working, Dr. Zaritsky enjoys spending time with his two daughters and traveling with his family. In addition, he is active outdoors, riding his bike to work, hiking and birdwatching. He also enjoys volunteering with the National Kidney Foundation.