His areas of expertise include the following: kidney stones, edema (swelling from fluid retention), and glomerular diseases. He is an in-network provider for Coventry, United Healthcare HSA, and United Healthcare HMO, in addition to other insurance carriers. Dr. Marcus graduated from Temple University School of Medicine and then he performed his residency at a hospital affiliated with the University of Michigan. Dr. Marcus has received the following distinction: "Top Doctor" in Nephrology, Main Line Today. His professional affiliations include Riddle Hospital and Crozer-Keystone Health System. He is accepting new patients.