The Three Sisters RTP is sponsored by OHSU and is the first graduate medical education program in Central Oregon. Dr. Roach, who attended California State University, Chico, and Touro University California, will serve patients at St. Charles Family Care in Madras. “We look forward to welcoming Dr. Gremel to our team at Mosaic,” said Dr. Katie Snyder, clinical medical director for Mosaic’s Madras Health Center and residency program teaching physician. St. Charles is a private, nonprofit Oregon corporation and is the largest employer in Central Oregon with more than 5,600 caregivers. About Mosaic Community HealthMosaic Community Health is a nonprofit community health center that serves Central Oregonians from all walks of life.