In the 1990s, his expertise (as a biostatistician) in analyzing prenatal screening test performance resulted in his being appointed to the College of American Pathologists Resource Committee, which is responsible for laboratory proficiency testing throughout the United States. More recently, he developed the ACCE process (along with James E. Haddow) and has taken a lead role in applying that process to a variety of genomic tests, as a consultant to the EGAPP Working Group.