Mark has worked with his wife Sarah beginning their experience with community health workers in Alaska in 1988 and have been focused on the further development of effective care coordination models since that time. Mark and Sarah developed the Community HUB model. This model focuses on identifying and addressing health social and behavioral health risk factors among high risk populations. Recently published peer reviewed manuscripts have demonstrated significant outcome improvements and cost savings. Mark and Sarah have worked with AHRQ and the Community Care Coordination Learning Network to write and develop the current published AHRQ manuals describing the Pathways Community HUB model. This work has translated into the development of national Certification Standards for the HUB model. They have been directly involved in the development and implementation of more than 20 Community HUBs across the United States. Mark continues to work part time as a primary care pediatrician. He and Sarah have three children and live in Mansfield Ohio.