Sticking to the plan About five years ago, Memorial Hermann launched a massive building boom pegged to the systemÔÇÖs 100-year anniversary. Well over $1 billion worth of projects got done on schedule, and Keith Regan reports on the keys to that success story. Memorial Hermann officially came into being in the 1990s when two large Houston-area hospital networks merged into a single not-for-profit network of urban and suburban healthcare facilities. Today the system is widely recognized for its acute and specialty care services.