A Certified Registered Nurse Anesthetist (CRNA) provides anesthesia care to adult and geriatric patients in both inpatient and outpatient settings. They work under the supervision of MDs with a typical supervision ratio of 1:4, performing anesthesia services independently in a trauma level II facility. This role involves working various shift lengths, collaborating with support staff, and using EMR systems such as Epic, with travel and malpractice coverage provided.