As anesthesiologist shortages continue across the U.S., some ASCs are rethinking their anesthesia care delivery. Proliance found recruitment smoother under the CRNA-only model. Mr. Zahumensky emphasized the importance of running long-term financial models: What would reimbursement look like under MD-led vs. CRNA-only care? The nation’s top-rated hospitals all employ the physician-led model; not a single one of these institutions allows nurse-only anesthesia care. … The physician-led, team-based model of anesthesia is the most common model of anesthesia care in the United States.