Medical Laboratory Scientist St. Mary Medical Center in Apple Valley, CA. This position is full-time and will work 8-hour, evening shifts. St. Mary Medical Center has been a part of the community of Apply Valley, California since 1956 and is recognized as one of the best regional hospitals in 6 types of care by U.S. News & World Report. Be part of our team dedicated to providing exceptional medical care across a range of specialties for our community.