Dr. Eduardo D. Castillo

Dr. Zihao Wu is a board-certified colon and rectal surgeon with additional board certification in general surgery. Dr. Wu previously served for more than a decade as an associate professor in Clinical Surgery within the Department of Surgery at the University of Missouri School of Medicine in Columbia. He specializes in treating anorectal disorders (hemorrhoids, anal fistula, anal fissure, anal warts etc), colon and rectal cancer, complicated diverticular disease, Crohn’s disease, Ulcerative colitis, and rectal prolapse. He also offers screening and diagnostic colonoscopy. He performs advanced robotic and laparoscopic colon and rectal surgeries. Dr. Wu grew up in a small village in Southern China where his father was the only physician. His passion for caring for others came from watching his father at work. He earned his medical degree at Sun Yat-Sen University of Medical Sciences in China. He completed his general surgery residency at St. Agnes Healthcare in Baltimore, Md., before going on to complete his colon and rectal surgery fellowship at Saint Vincent Health Center in Erie, Pa. Dr. Wu is a member of the American College of Surgeons and American Society of Colon and Rectal Surgeons. He is fluent in the Chinese Cantonese language. Dr. Wu is rated as a Distinguished provider by MediFind in the treatment of Anal Cancer. His top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Lynch Syndrome, Hernia Surgery, and Ileostomy.

Randall Crim is a Colorectal Surgeon and a General Surgeon in Irving, Texas. Dr. Crim has been practicing medicine for over 42 years and is rated as an Advanced provider by MediFind in the treatment of Anal Cancer. His top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Anal Cancer, Hernia Surgery, and Colonoscopy.

Anna Toker is a Colorectal Surgeon in Mansfield, Texas. Dr. Toker is rated as a Distinguished provider by MediFind in the treatment of Anal Cancer. Her top areas of expertise are Rectal Prolapse, Lynch Syndrome, Colorectal Cancer, Bladder Reconstruction, and Hemorrhoidectomy.