sentences:  Thirty-four percent of nurse anesthetists practice in communities of less than 50,000 due to rural pass-through program where "eligible hospitals may use reasonable-costs based Part A payments in lieu of the conventional Part B payments as a rural practice inducement for non-physician anesthesia providers such as anesthesiologist assistants (a type of physician assistant) and nurse anesthetists to practice in small, low volume rural hospitals.Under the Centers for Medicare and Medicaid Services (CMS) current interpretation of the current “pass-through” program, eligible small rural hospitals are not permitted to use the “pass-through” funds to hire physician anesthesiologists.