Dr. Sims is a Professor at the University of Washington with joint appointments in the departments of Bioengineering and Medicine. He founded Cell Biosciences (now Protein Simple) along with his colleague, Dr. Allbritton in 2002. Drs. Sims, Allbritton, and Wang were also founders of Intellego Corporation which became a subsidiary of Amkor Technology and Altis Biosystems. Dr. Sims earned his M.D. degree from Johns Hopkins University followed by a medicine residency at Harvard and fellowships at Stanford.