In 1989, Dr. Schlaff was recruited to the University of Colorado in Denver where he founded the Division of Reproductive Endocrinology and built it into one of the preeminent divisions in the country. In addition to being an outstanding clinician, having been named one of the Best Doctors in America annually for 20 years, Dr. Schlaff has been a prolific clinical researcher, having been continuously funded by the National Institutes of Health for fifteen years. He has also published over 150 scientific papers and held numerous national leadership positions, including the Board of Directors of the American Society for Reproductive Medicine and President of the Society of Reproductive Endocrinology and Infertility in 2004. He is board certified in OB/GYN and sub-specialty board certified in Reproductive Endocrinology and Infertility.
In 2011, Dr. Schlaff was recruited to Philadelphia to become the Paul and Eloise Bowers Professor and Chairman of the Department of Obstetrics and Gynecology at Jefferson Medical College, Thomas Jefferson University.