Dr. Walter A. Koltun

Robert Malizia, MD is a dual board-certified General and Colorectal Surgeon with a distinguished focus on minimally-invasive robotic surgery. Dr. Malizia attended medical school at the University of Buffalo in Buffalo, New York, completed his General Surgery residency at Albany Medical Center in Albany, New York and completed his fellowship in Colon and Rectal Surgery at Brigham and Women’s Hospital, Harvard Medical School in Boston, Massachusetts. He is certified through the American Board of Surgery and the American Board of Colon and Rectal Surgery. He is an active member of the American Society of Colon and Rectal Surgery and American College of Surgeons. Dr. Malizia is rated as an Advanced provider by MediFind in the treatment of Proctitis. His top areas of expertise are Proctitis, Rectal Prolapse, Anal Fissure, Hemorrhoids, and Hernia Surgery.

Thomas Nicholson, MD, specializes in colon and rectal surgery and is board-certified in surgery by the American Board of Surgery and colon and rectal surgery by the American Board of Colon and Rectal Surgery. He practices at Leader Surgical Associates-UPMC and is affiliated with UPMC West Shore, UPMC Memorial, UPMC Harrisburg, and UPMC Community Osteopathic. Dr. Nicholson earned his medical degree at the Pennsylvania State University College of Medicine. He completed his residency at WellSpan York Hospital and a fellowship at Georgia Colon & Rectal Surgical Associates. Dr. Nicholson is rated as a Distinguished provider by MediFind in the treatment of Proctitis. His top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Encopresis, Colostomy, and Hernia Surgery.

Jeffery Nelson is a General Surgeon and a Colorectal Surgeon in Lutherville, Maryland. Dr. Nelson is rated as an Advanced provider by MediFind in the treatment of Proctitis. His top areas of expertise are Proctitis, Rectal Prolapse, Levator Syndrome, Ureteroscopy, and Bladder Reconstruction. Dr. Nelson is currently accepting new patients.