Professional experience and interests
After fellowship, Dr Cheng stayed at Northwestern University Medical School and Children's Memorial Hospital from 1996 to 1998 as an assistant professor and established a basic science Pediatric Urology Research Laboratory at Children's Memorial Hospital. From 1998 to 2002, Dr. Cheng relocated to the Children's Hospital of Oklahoma and Oklahoma University Medical Center where he also served as an assistant professor of urology. Dr. Cheng recently returned to Northwestern and Children's Memorial in the summer of 2002. Current areas of special interest in pediatric urology include complex urinary tract reconstruction, surgical management of the neurogenic bladder, genital reconstruction and laparoscopy. He is currently working on establishing a multispecialty center of excellence at Children's Memorial Hospital in intersex.

Professional organizations
Dr. Cheng is member of numerous societies including the Society for Pediatric Urology, American Academy of Pediatrics, Society of Fetal Urology, and American College of Surgeons. He is the author of over 40 papers, invited articles, and book chapters. Dr. Cheng currently serves as a member of the Society of Pediatric Urology Research Council and The Professional Advisory Council of the Spina Bifida Association of America.

Research
Dr. Cheng's basic science research is in the areas of tissue engineering and bladder physiology. He is currently collaborating with Dr. Samuel Stupp, a leader in the field of nanotechnology, and Dr. Bradley Kropp at the University of Oklahoma. Together, they are investigating different methods of promoting tissue specific regeneration in the urinary tract with an emphasis on bladder regeneration. Dr. Cheng currently has a grant from the New York Academy of Medicine to determine the differences that exist between cultured cells from the neuropathic bladder and normal bladder and the implications that these differences have for future tissue engineering techniques.