Tracy Stackhouse, MA, OTR, and Sarah K. Scharfenaker, MA, CCC-SLP, are the co-founders of Developmental FX in Denver.

Tracy is a leading pediatric occupational therapist (OT) involved in clinical treatment, research, mentoring, and training regarding OT intervention for persons with neurodevelopmental differences, especially Fragile X syndrome and autism.

Sarah worked in the fields of Fragile X syndrome and neurodevelopmental disorders for more than 30 years before retiring in December 2018.