Pullin is in his current position since 2017. Previously he was president of MedStar Harbor Hospital and SVP of MedStar Health. He was SVP and COO at MedStar Washington Hospital Center, VP of operaions and business development at St. Luke's Episcopal Health System in Houston, and VP of acquisitions and development at Symbion Healthcare Inc. In 2020 and 2018, Modern Healthcare recognized him as one of the naion's Rop 25 Minority Executives in Healthcare.