If the U.S. Supreme Court rules the individual health insurance mandate constitutional, 6.9 million previously uninsured Californians are expected to flood the healthcare system in 2014. Glide Health Services, a community clinic in the heart of San Francisco's Tenderloin, provides primary care for some 3,000 patients a year. Staffed almost exclusively by nurse practitioners, it's the largest clinic of its kind on the West Coast. Pat Dennehy, the clinic's director, is gaining national attention for her innovative approach to providing low-cost, high quality care at a time when the state of California needs all the options it can get.