Pediatric Clinic - St. Mary Medical Center - Long Beach offers many services, including diagnostic care, immunizations, and laboratory tests. Visit Pediatric Clinic - St. Mary Medical Center - Long Beach located at 529 E 10th St, Long Beach, CA. As part of the Dignity Health network, Pediatric Clinic - St. Mary Medical Center - Long Beach is dedicated to delivering high quality, compassionate care and access to Long Beach and nearby communities.