Full Press Release Details
RALEIGH, NORTH CAROLINA, AUGUST 4, 2025—Lumexa Imaging, one of the nation’s largest providers of outpatient imaging services, today announced Dr. Russell Stewart, MD, MBA, MS as its new Chief Medical Officer.
Dr. Stewart joins Lumexa Imaging as a practicing, board-certified musculoskeletal radiologist and healthcare executive with a unique background spanning clinical radiology, AI-driven innovation, and quality improvement.
Most recently, Dr. Stewart served as Chief Clinical Officer at Covera Health, where he led initiatives using advanced data analytics and artificial intelligence to redefine and improve care quality. He has also held executive roles at Nines, a Silicon Valley radiology AI company, where he guided regulatory strategy and led successful FDA clearances for machine learning-based diagnostic tools.
He continues to provide advanced diagnostic interpretations at Stanford University Medical Center, where he has held several key leadership roles, including Director of Body Imaging at the Stanford South Bay Cancer Center and Director of Quality Improvement for the Department of Radiology.
As Chief Medical Officer, Dr. Stewart will oversee Lumexa Imaging’s national clinical strategy, leading efforts to enhance quality, promote patient safety, and strengthen partnerships with health systems, referring providers, and the company’s network of subspecialized radiologists. He will also lead the advancement of technology-driven solutions that further clinical excellence, one of the organization’s important competitive advantages.
“Dr. Stewart brings a powerful blend of clinical acumen, business strategy, and technology expertise to our team,” said Caitlin Zulla, CEO of Lumexa Imaging. “His leadership will be instrumental as we expand access to world-class outpatient imaging and continue to elevate the standard of care through innovation and clinical excellence.”
“I am honored to join Lumexa Imaging during this exciting chapter of growth and transformation,” said Dr. Stewart. “This organization is uniquely positioned to improve how patients experience convenient and affordable outpatient imaging care. I look forward to working with our radiologists and partners to deliver measurable value through quality, efficiency, and patient satisfaction.”
Dr. Stewart earned his medical degree from The University of Chicago Booth School of Medicine and holds an MBA from The University of Chicago Booth School of Business. In addition to his extensive professional accomplishments, he brings a unique personal background as a former NFL player with the Seattle Seahawks.
About Lumexa Imaging Lumexa Imaging is one of the country’s largest providers of outpatient medical imaging. With over 5,000 team members and more than 180 outpatient imaging centers across 13 states, our team conducts more than 4 million outpatient studies annually. We are the partner of choice for health systems, referring providers, and radiologists, delivering best-in-class clinical excellence, operations, and state-of-the-art technology across our platform.