Dr. Stevenson sees all types of individuals with various genetic disorders in his clinical practice. However, he has particular interests in disorders of the Ras/MAPK pathway which includes neurofibromatosis type 1, Noonan syndrome, CFC syndrome, and Costello syndrome. He also has expertise in evaluating individuals with vascular anomalies including hereditary hemorrhagic telangiectasia, and skeletal dysplasias. Dr. Stevenson also has a focus on treating individuals with Prader-Willi syndrome. He has research interests in identifying clinical trial endpoints and is actively involved in clinical trials.