Dr. Mariani completed his Orthopaedic Residency in 1986. Board certified by the American Osteopathic Board of Orthopedic Surgery, he is a member of the AOAO. Dr. Mariani served as Chief of Staff for Kennedy Memorial Hospitals. Having served as its Director of Orthopedics at Kennedy Health System, as well, Dr Mariani was instrumental in the growth of the orthopedic program at the institution. He has been involved with several advances in orthopaedic care, and is currently an industry consultant for Stryker Orthopedics. He has been named to the Courier Post's "Best of South Jersey" list and was most recently named Top Physicians by South Jersey Magazine, 2013. Currently, Dr. Mariani focuses on innovative techniques for knee replacement surgeries. His primary practice consists of patients with knee pain, which he treats in the Harbor Pavilions, Sewell office.