A Certified Registered Nurse Anesthetist (CRNA) provides anesthesia care independently in a hospital setting, working Monday to Friday without on-call duties. The role involves administering various regional anesthesia techniques such as brachial plexus spinals, truncal, and lower extremity nerve blocks. The CRNA utilizes EMR systems like Medaxion and collaborates with onsite MDs to ensure patient safety and effective anesthesia management.